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a0d0e21e 1/* perl.h
a687059c 2 *
1129b882 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5cd3f21a 4 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others
a687059c 5 *
352d5a3a
LW
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
8d063cd8 8 *
8d063cd8 9 */
d6376244 10
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LW
11#ifndef H_PERL
12#define H_PERL 1
8d063cd8 13
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14#ifdef PERL_FOR_X2P
15/*
d460ef45 16 * This file is being used for x2p stuff.
760ac839 17 * Above symbol is defined via -D in 'x2p/Makefile.SH'
d460ef45 18 * Decouple x2p stuff from some of perls more extreme eccentricities.
760ac839 19 */
55497cff 20#undef MULTIPLICITY
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21#undef USE_STDIO
22#define USE_STDIO
23#endif /* PERL_FOR_X2P */
24
d460ef45 25#ifdef PERL_MICRO
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26# include "uconfig.h"
27#else
611cf957 28# include "config.h"
12ae5dfc 29#endif
0cb96387 30
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31/* this is used for functions which take a depth trailing
32 * argument under debugging */
33#ifdef DEBUGGING
34#define _pDEPTH ,U32 depth
35#define _aDEPTH ,depth
36#else
37#define _pDEPTH
38#define _aDEPTH
39#endif
40
7dc3eb73 41/* NOTE 1: that with gcc -std=c89 the __STDC_VERSION__ is *not* defined
9267464d 42 * because the __STDC_VERSION__ became a thing only with C90. Therefore,
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43 * with gcc, HAS_C99 will never become true as long as we use -std=c89.
44
45 * NOTE 2: headers lie. Do not expect that if HAS_C99 gets to be true,
46 * all the C99 features are there and are correct. */
9267464d 47#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \
996959af 48 defined(_STDC_C99) || defined(__c99)
86a3cabf 49# define HAS_C99 1
86a3cabf
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50#endif
51
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52/* See L<perlguts/"The Perl API"> for detailed notes on
53 * PERL_IMPLICIT_CONTEXT and PERL_IMPLICIT_SYS */
54
7ee02ac1 55/* XXX NOTE that from here --> to <-- the same logic is
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56 * repeated in makedef.pl, so be certain to update
57 * both places when editing. */
58
6f4183fe 59#ifdef USE_ITHREADS
acfe0abc 60# if !defined(MULTIPLICITY)
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61# define MULTIPLICITY
62# endif
63#endif
64
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65#ifdef PERL_GLOBAL_STRUCT_PRIVATE
66# ifndef PERL_GLOBAL_STRUCT
67# define PERL_GLOBAL_STRUCT
68# endif
69#endif
97aff369 70
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71#ifdef PERL_GLOBAL_STRUCT
72# ifndef MULTIPLICITY
73# define MULTIPLICITY
74# endif
75#endif
76
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77#ifdef MULTIPLICITY
78# ifndef PERL_IMPLICIT_CONTEXT
79# define PERL_IMPLICIT_CONTEXT
80# endif
81#endif
82
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83/* undef WIN32 when building on Cygwin (for libwin32) - gph */
84#ifdef __CYGWIN__
85# undef WIN32
86# undef _WIN32
87#endif
88
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89#if defined(__SYMBIAN32__) || (defined(__VC32__) && defined(WINS))
90# ifndef SYMBIAN
91# define SYMBIAN
92# endif
93#endif
94
a0fd4948 95#ifdef __SYMBIAN32__
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96# include "symbian/symbian_proto.h"
97#endif
98
99/* Any stack-challenged places. The limit varies (and often
100 * is configurable), but using more than a kilobyte of stack
101 * is usually dubious in these systems. */
739a0b84
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102#if defined(__SYMBIAN32__)
103/* Symbian: need to work around the SDK features. *
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104 * On WINS: MS VC5 generates calls to _chkstk, *
105 * if a "large" stack frame is allocated. *
106 * gcc on MARM does not generate calls like these. */
107# define USE_HEAP_INSTEAD_OF_STACK
108#endif
109
dd134d2c 110/* Use the reentrant APIs like localtime_r and getpwent_r */
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111/* Win32 has naturally threadsafe libraries, no need to use any _r variants.
112 * XXX KEEP makedef.pl copy of this code in sync */
14795193 113#if defined(USE_ITHREADS) && !defined(USE_REENTRANT_API) && !defined(NETWARE) && !defined(WIN32)
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114# define USE_REENTRANT_API
115#endif
116
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117/* <--- here ends the logic shared by perl.h and makedef.pl */
118
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119/* Microsoft Visual C++ 6.0 needs special treatment in numerous places */
120#if defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1200 && _MSC_VER < 1300
121# define USING_MSVC6
122#endif
123
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124#undef START_EXTERN_C
125#undef END_EXTERN_C
126#undef EXTERN_C
127#ifdef __cplusplus
128# define START_EXTERN_C extern "C" {
129# define END_EXTERN_C }
130# define EXTERN_C extern "C"
131#else
132# define START_EXTERN_C
133# define END_EXTERN_C
134# define EXTERN_C extern
135#endif
136
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137/* Fallback definitions in case we don't have definitions from config.h.
138 This should only matter for systems that don't use Configure and
139 haven't been modified to define PERL_STATIC_INLINE yet.
140*/
141#if !defined(PERL_STATIC_INLINE)
142# ifdef HAS_STATIC_INLINE
143# define PERL_STATIC_INLINE static inline
144# else
145# define PERL_STATIC_INLINE static
146# endif
147#endif
148
da5fdda8 149#if defined(PERL_GLOBAL_STRUCT) && !defined(PERL_GET_VARS)
27da23d5 150# ifdef PERL_GLOBAL_STRUCT_PRIVATE
cf5a8da6 151 EXTERN_C struct perl_vars* Perl_GetVarsPrivate();
27da23d5 152# define PERL_GET_VARS() Perl_GetVarsPrivate() /* see miniperlmain.c */
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153# else
154# define PERL_GET_VARS() PL_VarsPtr
155# endif
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156#endif
157
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158/* this used to be off by default, now its on, see perlio.h */
159#define PERLIO_FUNCS_CONST
160
5aaab254 161#define pVAR struct perl_vars* my_vars PERL_UNUSED_DECL
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162
163#ifdef PERL_GLOBAL_STRUCT
164# define dVAR pVAR = (struct perl_vars*)PERL_GET_VARS()
165#else
166# define dVAR dNOOP
167#endif
168
c5be433b 169#ifdef PERL_IMPLICIT_CONTEXT
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170# ifndef MULTIPLICITY
171# define MULTIPLICITY
c5be433b 172# endif
e8dda941 173# define tTHX PerlInterpreter*
5aaab254 174# define pTHX tTHX my_perl PERL_UNUSED_DECL
3db8f154 175# define aTHX my_perl
9399a70c 176# define aTHXa(a) aTHX = (tTHX)a
27da23d5 177# ifdef PERL_GLOBAL_STRUCT
e8dda941 178# define dTHXa(a) dVAR; pTHX = (tTHX)a
27da23d5 179# else
e8dda941 180# define dTHXa(a) pTHX = (tTHX)a
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181# endif
182# ifdef PERL_GLOBAL_STRUCT
183# define dTHX dVAR; pTHX = PERL_GET_THX
184# else
185# define dTHX pTHX = PERL_GET_THX
186# endif
c5be433b 187# define pTHX_ pTHX,
c5be433b 188# define aTHX_ aTHX,
4373e329 189# define pTHX_1 2
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190# define pTHX_2 3
191# define pTHX_3 4
192# define pTHX_4 5
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193# define pTHX_5 6
194# define pTHX_6 7
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195# define pTHX_7 8
196# define pTHX_8 9
197# define pTHX_9 10
a6fc70e5 198# define pTHX_12 13
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199# if defined(DEBUGGING) && !defined(PERL_TRACK_MEMPOOL)
200# define PERL_TRACK_MEMPOOL
201# endif
202#else
203# undef PERL_TRACK_MEMPOOL
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204#endif
205
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206#ifdef DEBUGGING
207# define dTHX_DEBUGGING dTHX
208#else
209# define dTHX_DEBUGGING dNOOP
210#endif
211
76e3520e 212#define STATIC static
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213
214#ifndef PERL_CORE
215/* Do not use these macros. They were part of PERL_OBJECT, which was an
216 * implementation of multiplicity using C++ objects. They have been left
217 * here solely for the sake of XS code which has incorrectly
218 * cargo-culted them.
219 */
76e3520e 220#define CPERLscope(x) x
565764a8 221#define CPERLarg void
76e3520e 222#define CPERLarg_
e3b8966e 223#define _CPERLarg
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224#define PERL_OBJECT_THIS
225#define _PERL_OBJECT_THIS
226#define PERL_OBJECT_THIS_
312caa8e 227#define CALL_FPTR(fptr) (*fptr)
ef69c8fc 228#define MEMBER_TO_FPTR(name) name
16c91539 229#endif /* !PERL_CORE */
76e3520e 230
16c91539 231#define CALLRUNOPS PL_runops
f9f4320a 232
3ab4a224 233#define CALLREGCOMP(sv, flags) Perl_pregcomp(aTHX_ (sv),(flags))
f9f4320a 234
16c91539 235#define CALLREGCOMP_ENG(prog, sv, flags) (prog)->comp(aTHX_ sv, flags)
a340edde 236#define CALLREGEXEC(prog,stringarg,strend,strbeg,minend,sv,data,flags) \
16c91539 237 RX_ENGINE(prog)->exec(aTHX_ (prog),(stringarg),(strend), \
a340edde 238 (strbeg),(minend),(sv),(data),(flags))
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239#define CALLREG_INTUIT_START(prog,sv,strbeg,strpos,strend,flags,data) \
240 RX_ENGINE(prog)->intuit(aTHX_ (prog), (sv), (strbeg), (strpos), \
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241 (strend),(flags),(data))
242#define CALLREG_INTUIT_STRING(prog) \
16c91539 243 RX_ENGINE(prog)->checkstr(aTHX_ (prog))
f8149455 244
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245#define CALLREGFREE(prog) \
246 Perl_pregfree(aTHX_ (prog))
247
248#define CALLREGFREE_PVT(prog) \
fc6bde6f 249 if(prog) RX_ENGINE(prog)->rxfree(aTHX_ (prog))
f8149455 250
2fdbfb4d 251#define CALLREG_NUMBUF_FETCH(rx,paren,usesv) \
16c91539 252 RX_ENGINE(rx)->numbered_buff_FETCH(aTHX_ (rx),(paren),(usesv))
93b32b6d 253
2fdbfb4d 254#define CALLREG_NUMBUF_STORE(rx,paren,value) \
16c91539 255 RX_ENGINE(rx)->numbered_buff_STORE(aTHX_ (rx),(paren),(value))
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256
257#define CALLREG_NUMBUF_LENGTH(rx,sv,paren) \
16c91539 258 RX_ENGINE(rx)->numbered_buff_LENGTH(aTHX_ (rx),(sv),(paren))
2fdbfb4d 259
192b9cd1 260#define CALLREG_NAMED_BUFF_FETCH(rx, key, flags) \
16c91539 261 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_FETCH))
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262
263#define CALLREG_NAMED_BUFF_STORE(rx, key, value, flags) \
16c91539 264 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), (value), ((flags) | RXapif_STORE))
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265
266#define CALLREG_NAMED_BUFF_DELETE(rx, key, flags) \
16c91539 267 RX_ENGINE(rx)->named_buff(aTHX_ (rx),(key), NULL, ((flags) | RXapif_DELETE))
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268
269#define CALLREG_NAMED_BUFF_CLEAR(rx, flags) \
16c91539 270 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_CLEAR))
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271
272#define CALLREG_NAMED_BUFF_EXISTS(rx, key, flags) \
16c91539 273 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_EXISTS))
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274
275#define CALLREG_NAMED_BUFF_FIRSTKEY(rx, flags) \
16c91539 276 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), NULL, ((flags) | RXapif_FIRSTKEY))
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277
278#define CALLREG_NAMED_BUFF_NEXTKEY(rx, lastkey, flags) \
16c91539 279 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), (lastkey), ((flags) | RXapif_NEXTKEY))
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280
281#define CALLREG_NAMED_BUFF_SCALAR(rx, flags) \
16c91539 282 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_SCALAR))
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283
284#define CALLREG_NAMED_BUFF_COUNT(rx) \
16c91539 285 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, RXapif_REGNAMES_COUNT)
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286
287#define CALLREG_NAMED_BUFF_ALL(rx, flags) \
16c91539 288 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, flags)
93b32b6d 289
49d7dfbc 290#define CALLREG_PACKAGE(rx) \
16c91539 291 RX_ENGINE(rx)->qr_package(aTHX_ (rx))
93b32b6d 292
00f254e2 293#if defined(USE_ITHREADS)
f9f4320a 294#define CALLREGDUPE(prog,param) \
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295 Perl_re_dup(aTHX_ (prog),(param))
296
297#define CALLREGDUPE_PVT(prog,param) \
16c91539 298 (prog ? RX_ENGINE(prog)->dupe(aTHX_ (prog),(param)) \
00f254e2 299 : (REGEXP *)NULL)
f9f4320a 300#endif
14dd3ad8 301
a20207d7 302
bcdf7404 303
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304
305
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306/*
307 * Because of backward compatibility reasons the PERL_UNUSED_DECL
308 * cannot be changed from postfix to PERL_UNUSED_DECL(x). Sigh.
309 *
310 * Note that there are C compilers such as MetroWerks CodeWarrior
1266ad8c 311 * which do not have an "inlined" way (like the gcc __attribute__) of
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312 * marking unused variables (they need e.g. a #pragma) and therefore
313 * cpp macros like PERL_UNUSED_DECL cannot work for this purpose, even
314 * if it were PERL_UNUSED_DECL(x), which it cannot be (see above).
315 *
316 */
1266ad8c 317
9969cdde 318#if defined(__SYMBIAN32__) && defined(__GNUC__)
5b2bd0a5 319# ifdef __cplusplus
5ba4cab2 320# define PERL_UNUSED_DECL
5b2bd0a5 321# else
5ba4cab2 322# define PERL_UNUSED_DECL __attribute__((unused))
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323# endif
324#endif
44dbb695 325
5b2bd0a5 326#ifndef PERL_UNUSED_DECL
98d1c64e 327# if defined(HASATTRIBUTE_UNUSED) && (!defined(__cplusplus) || __GNUC__ >= 4)
5ba4cab2 328# define PERL_UNUSED_DECL __attribute__unused__
b79c357a 329# else
5ba4cab2 330# define PERL_UNUSED_DECL
b79c357a 331# endif
5b2bd0a5 332#endif
00f254e2 333
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334/* gcc -Wall:
335 * for silencing unused variables that are actually used most of the time,
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336 * but we cannot quite get rid of, such as "ax" in PPCODE+noargs xsubs,
337 * or variables/arguments that are used only in certain configurations.
349b520e 338 */
53c1dcc0 339#ifndef PERL_UNUSED_ARG
c707756e 340# define PERL_UNUSED_ARG(x) ((void)sizeof(x))
ad73156c 341#endif
53c1dcc0 342#ifndef PERL_UNUSED_VAR
a730e3f2 343# define PERL_UNUSED_VAR(x) ((void)sizeof(x))
53c1dcc0 344#endif
ad73156c 345
23491f1d 346#if defined(USE_ITHREADS) || defined(PERL_GLOBAL_STRUCT)
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347# define PERL_UNUSED_CONTEXT PERL_UNUSED_ARG(my_perl)
348#else
349# define PERL_UNUSED_CONTEXT
350#endif
351
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352/* gcc (-ansi) -pedantic doesn't allow gcc statement expressions,
353 * g++ allows them but seems to have problems with them
354 * (insane errors ensue).
355 * g++ does not give insane errors now (RMB 2008-01-30, gcc 4.2.2).
356 */
357#if defined(PERL_GCC_PEDANTIC) || \
358 (defined(__GNUC__) && defined(__cplusplus) && \
359 ((__GNUC__ < 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ < 2))))
360# ifndef PERL_GCC_BRACE_GROUPS_FORBIDDEN
361# define PERL_GCC_BRACE_GROUPS_FORBIDDEN
362# endif
363#endif
364
ffea512f 365/* Use PERL_UNUSED_RESULT() to suppress the warnings about unused results
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366 * of function calls, e.g. PERL_UNUSED_RESULT(foo(a, b)).
367 *
368 * The main reason for this is that the combination of gcc -Wunused-result
369 * (part of -Wall) and the __attribute__((warn_unused_result)) cannot
370 * be silenced with casting to void. This causes trouble when the system
371 * header files use the attribute.
372 *
373 * Use PERL_UNUSED_RESULT sparingly, though, since usually the warning
374 * is there for a good reason: you might lose success/failure information,
375 * or leak resources, or changes in resources.
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376 *
377 * But sometimes you just want to ignore the return value, e.g. on
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378 * codepaths soon ending up in abort, or in "best effort" attempts,
379 * or in situations where there is no good way to handle failures.
ffea512f 380 *
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381 * Sometimes PERL_UNUSED_RESULT might not be the most natural way:
382 * another possibility is that you can capture the return value
383 * and use PERL_UNUSED_VAR on that.
ffea512f 384 *
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385 * The __typeof__() is used instead of typeof() since typeof() is not
386 * available under strict C89, and because of compilers masquerading
387 * as gcc (clang and icc), we want exactly the gcc extension
388 * __typeof__ and nothing else.
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389 */
390#ifndef PERL_UNUSED_RESULT
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391# if defined(__GNUC__) && defined(HASATTRIBUTE_WARN_UNUSED_RESULT)
392# define PERL_UNUSED_RESULT(v) STMT_START { __typeof__(v) z = (v); (void)sizeof(z); } STMT_END
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393# else
394# define PERL_UNUSED_RESULT(v) ((void)(v))
395# endif
396#endif
397
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398/* on gcc (and clang), specify that a warning should be temporarily
399 * ignored; e.g.
400 *
7347ee54 401 * GCC_DIAG_IGNORE_DECL(-Wmultichar);
b56aac20 402 * char b = 'ab';
7347ee54 403 * GCC_DIAG_RESTORE_DECL;
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404 *
405 * based on http://dbp-consulting.com/tutorials/SuppressingGCCWarnings.html
406 *
407 * Note that "pragma GCC diagnostic push/pop" was added in GCC 4.6, Mar 2011;
408 * clang only pretends to be GCC 4.2, but still supports push/pop.
c1d6452f 409 *
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410 * Note on usage: all macros must be used at a place where a declaration
411 * or statement can occur, i.e., not in the middle of an expression.
412 * *_DIAG_IGNORE() and *_DIAG_RESTORE can be used in any such place, but
413 * must be used without a following semicolon. *_DIAG_IGNORE_DECL() and
414 * *_DIAG_RESTORE_DECL must be used with a following semicolon, and behave
415 * syntactically as declarations (like dNOOP). *_DIAG_IGNORE_STMT()
416 * and *_DIAG_RESTORE_STMT must be used with a following semicolon,
417 * and behave syntactically as statements (like NOOP).
c1d6452f 418 *
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419 */
420
57d4b8c5 421#if defined(__clang__) || defined(__clang) || \
d28ce8b4 422 (defined( __GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406)
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423# define GCC_DIAG_PRAGMA(x) _Pragma (#x)
424/* clang has "clang diagnostic" pragmas, but also understands gcc. */
b56aac20 425# define GCC_DIAG_IGNORE(x) _Pragma("GCC diagnostic push") \
c1d6452f 426 GCC_DIAG_PRAGMA(GCC diagnostic ignored #x)
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427# define GCC_DIAG_RESTORE _Pragma("GCC diagnostic pop")
428#else
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429# define GCC_DIAG_IGNORE(w)
430# define GCC_DIAG_RESTORE
b56aac20 431#endif
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432#define GCC_DIAG_IGNORE_DECL(x) GCC_DIAG_IGNORE(x) dNOOP
433#define GCC_DIAG_RESTORE_DECL GCC_DIAG_RESTORE dNOOP
434#define GCC_DIAG_IGNORE_STMT(x) GCC_DIAG_IGNORE(x) NOOP
435#define GCC_DIAG_RESTORE_STMT GCC_DIAG_RESTORE NOOP
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436/* for clang specific pragmas */
437#if defined(__clang__) || defined(__clang)
438# define CLANG_DIAG_PRAGMA(x) _Pragma (#x)
439# define CLANG_DIAG_IGNORE(x) _Pragma("clang diagnostic push") \
440 CLANG_DIAG_PRAGMA(clang diagnostic ignored #x)
441# define CLANG_DIAG_RESTORE _Pragma("clang diagnostic pop")
442#else
443# define CLANG_DIAG_IGNORE(w)
444# define CLANG_DIAG_RESTORE
445#endif
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446#define CLANG_DIAG_IGNORE_DECL(x) CLANG_DIAG_IGNORE(x) dNOOP
447#define CLANG_DIAG_RESTORE_DECL CLANG_DIAG_RESTORE dNOOP
448#define CLANG_DIAG_IGNORE_STMT(x) CLANG_DIAG_IGNORE(x) NOOP
449#define CLANG_DIAG_RESTORE_STMT CLANG_DIAG_RESTORE NOOP
b56aac20 450
6f207bd3 451#define NOOP /*EMPTY*/(void)0
91ca80c3 452#define dNOOP struct Perl___notused_struct
71be2cbc 453
0cb96387 454#ifndef pTHX
a78adc84 455/* Don't bother defining tTHX ; using it outside
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456 * code guarded by PERL_IMPLICIT_CONTEXT is an error.
457 */
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458# define pTHX void
459# define pTHX_
0cb96387
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460# define aTHX
461# define aTHX_
9399a70c 462# define aTHXa(a) NOOP
0cb96387
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463# define dTHXa(a) dNOOP
464# define dTHX dNOOP
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465# define pTHX_1 1
466# define pTHX_2 2
467# define pTHX_3 3
468# define pTHX_4 4
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469# define pTHX_5 5
470# define pTHX_6 6
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471# define pTHX_7 7
472# define pTHX_8 8
473# define pTHX_9 9
a6fc70e5 474# define pTHX_12 12
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475#endif
476
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477#ifndef dVAR
478# define dVAR dNOOP
479#endif
480
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481/* these are only defined for compatibility; should not be used internally */
482#if !defined(pTHXo) && !defined(PERL_CORE)
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483# define pTHXo pTHX
484# define pTHXo_ pTHX_
0cb96387
GS
485# define aTHXo aTHX
486# define aTHXo_ aTHX_
c5be433b 487# define dTHXo dTHX
71d280e3 488# define dTHXoa(x) dTHXa(x)
0cb96387
GS
489#endif
490
491#ifndef pTHXx
5aaab254 492# define pTHXx PerlInterpreter *my_perl
0cb96387 493# define pTHXx_ pTHXx,
0cb96387
GS
494# define aTHXx my_perl
495# define aTHXx_ aTHXx,
c5be433b 496# define dTHXx dTHX
22c35a8c 497#endif
71be2cbc 498
1de7c2ac
GS
499/* Under PERL_IMPLICIT_SYS (used in Windows for fork emulation)
500 * PerlIO_foo() expands to PL_StdIO->pFOO(PL_StdIO, ...).
501 * dTHXs is therefore needed for all functions using PerlIO_foo(). */
502#ifdef PERL_IMPLICIT_SYS
27da23d5
JH
503# ifdef PERL_GLOBAL_STRUCT_PRIVATE
504# define dTHXs dVAR; dTHX
505# else
506# define dTHXs dTHX
507# endif
1de7c2ac 508#else
27da23d5
JH
509# ifdef PERL_GLOBAL_STRUCT_PRIVATE
510# define dTHXs dVAR
511# else
512# define dTHXs dNOOP
513# endif
1de7c2ac
GS
514#endif
515
5b692037
JH
516#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__cplusplus)
517# ifndef PERL_USE_GCC_BRACE_GROUPS
518# define PERL_USE_GCC_BRACE_GROUPS
519# endif
520#endif
521
728e2803
PP
522/*
523 * STMT_START { statements; } STMT_END;
524 * can be used as a single statement, as in
525 * if (x) STMT_START { ... } STMT_END; else ...
526 *
527 * Trying to select a version that gives no warnings...
528 */
529#if !(defined(STMT_START) && defined(STMT_END))
5b692037 530# ifdef PERL_USE_GCC_BRACE_GROUPS
a0288114 531# define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
728e2803
PP
532# define STMT_END )
533# else
728e2803
PP
534# define STMT_START do
535# define STMT_END while (0)
728e2803
PP
536# endif
537#endif
538
d6f9c181
JH
539#ifndef BYTEORDER /* Should never happen -- byteorder is in config.h */
540# define BYTEORDER 0x1234
79072805
LW
541#endif
542
543/* Overall memory policy? */
544#ifndef CONSERVATIVE
545# define LIBERAL 1
546#endif
547
8ada0baa
JH
548#if 'A' == 65 && 'I' == 73 && 'J' == 74 && 'Z' == 90
549#define ASCIIish
550#else
551#undef ASCIIish
552#endif
553
79072805
LW
554/*
555 * The following contortions are brought to you on behalf of all the
556 * standards, semi-standards, de facto standards, not-so-de-facto standards
557 * of the world, as well as all the other botches anyone ever thought of.
558 * The basic theory is that if we work hard enough here, the rest of the
559 * code can be a lot prettier. Well, so much for theory. Sorry, Henry...
560 */
ac58e20f 561
ee0007ab 562/* define this once if either system, instead of cluttering up the src */
7c458fae 563#if defined(MSDOS) || defined(WIN32) || defined(NETWARE)
ee0007ab
LW
564#define DOSISH 1
565#endif
566
3d97541c 567/* These exist only for back-compat with XS modules. */
8162b70e 568#ifndef PERL_CORE
516e10a9 569#define VOL volatile
3d97541c 570#define CAN_PROTOTYPE
ae75e3d0 571#define _(args) args
6c2ae642 572#define I_LIMITS
36a113ce 573#define I_STDARG
6c2ae642 574#define STANDARD_C
8162b70e 575#endif
663a0e37 576
284167a5
SM
577/* By compiling a perl with -DNO_TAINT_SUPPORT or -DSILENT_NO_TAINT_SUPPORT,
578 * you get a perl without taint support, but doubtlessly with a lesser
579 * degree of support. Do not do so unless you know exactly what it means
580 * technically, have a good reason to do so, and know exactly how the
581 * perl will be used. perls with -DSILENT_NO_TAINT_SUPPORT are considered
582 * a potential security risk due to flat out ignoring the security-relevant
583 * taint flags. This being said, a perl without taint support compiled in
584 * has marginal run-time performance benefits.
585 * SILENT_NO_TAINT_SUPPORT implies NO_TAINT_SUPPORT.
586 * SILENT_NO_TAINT_SUPPORT is the same as NO_TAINT_SUPPORT except it
587 * silently ignores -t/-T instead of throwing an exception.
053a3618
SM
588 *
589 * DANGER! Using NO_TAINT_SUPPORT or SILENT_NO_TAINT_SUPPORT
6ecb40c7 590 * voids your nonexistent warranty!
284167a5 591 */
dc6d7f5c 592#if defined(SILENT_NO_TAINT_SUPPORT) && !defined(NO_TAINT_SUPPORT)
284167a5
SM
593# define NO_TAINT_SUPPORT 1
594#endif
595
596/* NO_TAINT_SUPPORT can be set to transform virtually all taint-related
597 * operations into no-ops for a very modest speed-up. Enable only if you
598 * know what you're doing: tests and CPAN modules' tests are bound to fail.
599 */
dc6d7f5c 600#ifdef NO_TAINT_SUPPORT
284167a5
SM
601# define TAINT NOOP
602# define TAINT_NOT NOOP
603# define TAINT_IF(c) NOOP
604# define TAINT_ENV() NOOP
605# define TAINT_PROPER(s) NOOP
606# define TAINT_set(s) NOOP
607# define TAINT_get 0
608# define TAINTING_get 0
609# define TAINTING_set(s) NOOP
610# define TAINT_WARN_get 0
611# define TAINT_WARN_set(s) NOOP
612#else
d48c660d 613# define TAINT (PL_tainted = PL_tainting)
284167a5 614# define TAINT_NOT (PL_tainted = FALSE)
d48c660d 615# define TAINT_IF(c) if (UNLIKELY(c)) { PL_tainted = PL_tainting; }
2439e033
SM
616# define TAINT_ENV() if (UNLIKELY(PL_tainting)) { taint_env(); }
617# define TAINT_PROPER(s) if (UNLIKELY(PL_tainting)) { taint_proper(NULL, s); }
284167a5
SM
618# define TAINT_set(s) (PL_tainted = (s))
619# define TAINT_get (PL_tainted)
620# define TAINTING_get (PL_tainting)
621# define TAINTING_set(s) (PL_tainting = (s))
622# define TAINT_WARN_get (PL_taint_warn)
623# define TAINT_WARN_set(s) (PL_taint_warn = (s))
624#endif
a687059c 625
20be6587
DM
626/* flags used internally only within pp_subst and pp_substcont */
627#ifdef PERL_CORE
628# define SUBST_TAINT_STR 1 /* string tainted */
629# define SUBST_TAINT_PAT 2 /* pattern tainted */
630# define SUBST_TAINT_REPL 4 /* replacement tainted */
631# define SUBST_TAINT_RETAINT 8 /* use re'taint' in scope */
632# define SUBST_TAINT_BOOLRET 16 /* return is boolean (don't taint) */
633#endif
634
d460ef45 635/* XXX All process group stuff is handled in pp_sys.c. Should these
a6e633de
PP
636 defines move there? If so, I could simplify this a lot. --AD 9/96.
637*/
638/* Process group stuff changed from traditional BSD to POSIX.
639 perlfunc.pod documents the traditional BSD-style syntax, so we'll
640 try to preserve that, if possible.
641*/
642#ifdef HAS_SETPGID
643# define BSD_SETPGRP(pid, pgrp) setpgid((pid), (pgrp))
da5fdda8
AC
644#elif defined(HAS_SETPGRP) && defined(USE_BSD_SETPGRP)
645# define BSD_SETPGRP(pid, pgrp) setpgrp((pid), (pgrp))
646#elif defined(HAS_SETPGRP2)
647# define BSD_SETPGRP(pid, pgrp) setpgrp2((pid), (pgrp))
a6e633de
PP
648#endif
649#if defined(BSD_SETPGRP) && !defined(HAS_SETPGRP)
650# define HAS_SETPGRP /* Well, effectively it does . . . */
651#endif
652
653/* getpgid isn't POSIX, but at least Solaris and Linux have it, and it makes
654 our life easier :-) so we'll try it.
655*/
656#ifdef HAS_GETPGID
657# define BSD_GETPGRP(pid) getpgid((pid))
da5fdda8
AC
658#elif defined(HAS_GETPGRP) && defined(USE_BSD_GETPGRP)
659# define BSD_GETPGRP(pid) getpgrp((pid))
660#elif defined(HAS_GETPGRP2)
661# define BSD_GETPGRP(pid) getpgrp2((pid))
a6e633de
PP
662#endif
663#if defined(BSD_GETPGRP) && !defined(HAS_GETPGRP)
664# define HAS_GETPGRP /* Well, effectively it does . . . */
665#endif
666
d460ef45 667/* These are not exact synonyms, since setpgrp() and getpgrp() may
a6e633de
PP
668 have different behaviors, but perl.h used to define USE_BSDPGRP
669 (prior to 5.003_05) so some extension might depend on it.
670*/
671#if defined(USE_BSD_SETPGRP) || defined(USE_BSD_GETPGRP)
672# ifndef USE_BSDPGRP
673# define USE_BSDPGRP
674# endif
663a0e37
LW
675#endif
676
486ec47a 677/* HP-UX 10.X CMA (Common Multithreaded Architecture) insists that
8ac5a1fe
MH
678 pthread.h must be included before all other header files.
679*/
3db8f154 680#if defined(USE_ITHREADS) && defined(PTHREAD_H_FIRST) && defined(I_PTHREAD)
8ac5a1fe
MH
681# include <pthread.h>
682#endif
683
58ab9e8b 684#include <sys/types.h>
663a0e37 685
c7925a5e
DD
686/* EVC 4 SDK headers includes a bad definition of MB_CUR_MAX in stdlib.h
687 which is included from stdarg.h. Bad definition not present in SD 2008
688 SDK headers. wince.h is not yet included, so we cant fix this from there
689 since by then MB_CUR_MAX will be defined from stdlib.h.
690 cewchar.h includes a correct definition of MB_CUR_MAX and it is copied here
691 since cewchar.h can't be included this early */
692#if defined(UNDER_CE) && (_MSC_VER < 1300)
5703b8ce 693# define MB_CUR_MAX 1uL
c7925a5e 694#endif
9d82a2b7
AC
695
696# include <stdarg.h>
760ac839 697
27db2737
JH
698#ifdef I_STDINT
699# include <stdint.h>
700#endif
701
fe14fcc3 702#include <ctype.h>
63b481b9
AC
703#include <float.h>
704#include <limits.h>
a0d0e21e
LW
705
706#ifdef METHOD /* Defined by OSF/1 v3.0 by ctype.h */
707#undef METHOD
a0d0e21e
LW
708#endif
709
12ae5dfc
JH
710#ifdef PERL_MICRO
711# define NO_LOCALE
712#endif
713
4633a7c4 714#ifdef I_LOCALE
36477c24 715# include <locale.h>
4633a7c4
LW
716#endif
717
6ebbc862
KW
718#ifdef I_XLOCALE
719# include <xlocale.h>
720#endif
721
36477c24
PP
722#if !defined(NO_LOCALE) && defined(HAS_SETLOCALE)
723# define USE_LOCALE
ccd65d51
KW
724# define HAS_SKIP_LOCALE_INIT /* Solely for XS code to test for this
725 capability */
36477c24
PP
726# if !defined(NO_LOCALE_COLLATE) && defined(LC_COLLATE) \
727 && defined(HAS_STRXFRM)
728# define USE_LOCALE_COLLATE
729# endif
730# if !defined(NO_LOCALE_CTYPE) && defined(LC_CTYPE)
731# define USE_LOCALE_CTYPE
732# endif
733# if !defined(NO_LOCALE_NUMERIC) && defined(LC_NUMERIC)
734# define USE_LOCALE_NUMERIC
735# endif
fa9b773e
KW
736# if !defined(NO_LOCALE_MESSAGES) && defined(LC_MESSAGES)
737# define USE_LOCALE_MESSAGES
738# endif
739# if !defined(NO_LOCALE_MONETARY) && defined(LC_MONETARY)
740# define USE_LOCALE_MONETARY
741# endif
56e45410
KW
742# if !defined(NO_LOCALE_TIME) && defined(LC_TIME)
743# define USE_LOCALE_TIME
744# endif
9821811f
KW
745# if !defined(NO_LOCALE_ADDRESS) && defined(LC_ADDRESS)
746# define USE_LOCALE_ADDRESS
747# endif
748# if !defined(NO_LOCALE_IDENTIFICATION) && defined(LC_IDENTIFICATION)
749# define USE_LOCALE_IDENTIFICATION
750# endif
751# if !defined(NO_LOCALE_MEASUREMENT) && defined(LC_MEASUREMENT)
752# define USE_LOCALE_MEASUREMENT
753# endif
754# if !defined(NO_LOCALE_PAPER) && defined(LC_PAPER)
755# define USE_LOCALE_PAPER
756# endif
757# if !defined(NO_LOCALE_TELEPHONE) && defined(LC_TELEPHONE)
758# define USE_LOCALE_TELEPHONE
759# endif
36477c24 760#endif /* !NO_LOCALE && HAS_SETLOCALE */
a0d0e21e 761
5a53bf38
KW
762/* XXX The next few defines are unfortunately duplicated in makedef.pl, and
763 * changes here MUST also be made there */
764
7f9e9632 765#ifdef USE_LOCALE /* These locale things are all subject to change */
7f9e9632
KW
766# if defined(HAS_NEWLOCALE) \
767 && defined(LC_ALL_MASK) \
768 && defined(HAS_FREELOCALE) \
769 && defined(HAS_USELOCALE) \
770 && ! defined(NO_POSIX_2008_LOCALE)
771
772 /* For simplicity, the code is written to assume that any platform advanced
773 * enough to have the Posix 2008 locale functions has LC_ALL. The test
774 * above makes sure that assumption is valid */
775
776# define HAS_POSIX_2008_LOCALE
777# endif
e9bc6d6b
KW
778# if defined(USE_ITHREADS) \
779 && ( defined(HAS_POSIX_2008_LOCALE) \
780 || (defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1400)) \
781 && ! defined(NO_THREAD_SAFE_LOCALE)
782# define USE_THREAD_SAFE_LOCALE
783# ifdef HAS_POSIX_2008_LOCALE
784# define USE_POSIX_2008_LOCALE
785# endif
786# endif
7f9e9632
KW
787#endif
788
69c5e0db
KW
789/* Microsoft documentation reads in the change log for VS 2015:
790 * "The localeconv function declared in locale.h now works correctly when
791 * per-thread locale is enabled. In previous versions of the library, this
792 * function would return the lconv data for the global locale, not the
793 * thread's locale."
794 */
795#if defined(WIN32) && defined(USE_THREAD_SAFE_LOCALE) && _MSC_VER < 1900
796# define TS_W32_BROKEN_LOCALECONV
797#endif
798
fe14fcc3 799#include <setjmp.h>
79072805 800
a0d0e21e 801#ifdef I_SYS_PARAM
79072805
LW
802# ifdef PARAM_NEEDS_TYPES
803# include <sys/types.h>
804# endif
805# include <sys/param.h>
352d5a3a 806#endif
79072805 807
ce3470dc
AD
808/* On BSD-derived systems, <sys/param.h> defines BSD to a year-month
809 value something like 199306. This may be useful if no more-specific
810 feature test is available.
811*/
812#if defined(BSD)
813# ifndef BSDish
814# define BSDish
815# endif
816#endif
817
dd512de3
AC
818/* Use all the "standard" definitions */
819#include <stdlib.h>
03a14243 820
3f270f98
JH
821/* If this causes problems, set i_unistd=undef in the hint file. */
822#ifdef I_UNISTD
763ee752
AB
823# if defined(__amigaos4__)
824# ifdef I_NETINET_IN
825# include <netinet/in.h>
826# endif
827# endif
3f270f98 828# include <unistd.h>
6e3136a6
AB
829# if defined(__amigaos4__)
830/* Under AmigaOS 4 newlib.library provides an environ. However using
831 * it doesn't give us enough control over inheritance of variables by
832 * subshells etc. so replace with custom version based on abc-shell
833 * code. */
834extern char **myenviron;
835# undef environ
836# define environ myenviron
837# endif
3f270f98
JH
838#endif
839
de8ca8af
NT
840/* for WCOREDUMP */
841#ifdef I_SYS_WAIT
842# include <sys/wait.h>
843#endif
844
9969cdde 845#ifdef __SYMBIAN32__
27da23d5
JH
846# undef _SC_ARG_MAX /* Symbian has _SC_ARG_MAX but no sysconf() */
847#endif
848
21e89b5f 849#if defined(HAS_SYSCALL) && !defined(HAS_SYSCALL_PROTO)
c45598c5 850EXTERN_C int syscall(int, ...);
2ef53570
JH
851#endif
852
21e89b5f 853#if defined(HAS_USLEEP) && !defined(HAS_USLEEP_PROTO)
c45598c5 854EXTERN_C int usleep(unsigned int);
2ef53570
JH
855#endif
856
f2f9e01d
KW
857/* macros for correct constant construction. These are in C99 <stdint.h>
858 * (so they will not be available in strict C89 mode), but they are nice, so
859 * let's define them if necessary. */
860#ifndef UINT16_C
861# if INTSIZE >= 2
862# define UINT16_C(x) ((U16_TYPE)x##U)
863# else
864# define UINT16_C(x) ((U16_TYPE)x##UL)
865# endif
866#endif
1109a392 867
f2f9e01d
KW
868#ifndef UINT32_C
869# if INTSIZE >= 4
870# define UINT32_C(x) ((U32_TYPE)x##U)
871# else
872# define UINT32_C(x) ((U32_TYPE)x##UL)
873# endif
874#endif
1109a392 875
f2f9e01d
KW
876#ifdef I_STDINT
877 typedef intmax_t PERL_INTMAX_T;
878 typedef uintmax_t PERL_UINTMAX_T;
879#endif
880
881/* N.B. We use QUADKIND here instead of HAS_QUAD here, because that doesn't
882 * actually mean what it has always been documented to mean (see RT #119753)
883 * and is explicitly turned off outside of core with dire warnings about
884 * removing the undef. */
885
886#if defined(QUADKIND)
887# undef PeRl_INT64_C
888# undef PeRl_UINT64_C
889/* Prefer the native integer types (int and long) over long long
890 * (which is not C89) and Win32-specific __int64. */
891# if QUADKIND == QUAD_IS_INT && INTSIZE == 8
892# define PeRl_INT64_C(c) (c)
893# define PeRl_UINT64_C(c) CAT2(c,U)
894# endif
895# if QUADKIND == QUAD_IS_LONG && LONGSIZE == 8
896# define PeRl_INT64_C(c) CAT2(c,L)
897# define PeRl_UINT64_C(c) CAT2(c,UL)
898# endif
899# if QUADKIND == QUAD_IS_LONG_LONG && defined(HAS_LONG_LONG)
900# define PeRl_INT64_C(c) CAT2(c,LL)
901# define PeRl_UINT64_C(c) CAT2(c,ULL)
902# endif
903# if QUADKIND == QUAD_IS___INT64
904# define PeRl_INT64_C(c) CAT2(c,I64)
905# define PeRl_UINT64_C(c) CAT2(c,UI64)
906# endif
907# ifndef PeRl_INT64_C
908# define PeRl_INT64_C(c) ((I64)(c)) /* last resort */
909# define PeRl_UINT64_C(c) ((U64TYPE)(c))
910# endif
911/* In OS X the INT64_C/UINT64_C are defined with LL/ULL, which will
912 * not fly with C89-pedantic gcc, so let's undefine them first so that
913 * we can redefine them with our native integer preferring versions. */
914# if defined(PERL_DARWIN) && defined(PERL_GCC_PEDANTIC)
915# undef INT64_C
916# undef UINT64_C
917# endif
918# ifndef INT64_C
919# define INT64_C(c) PeRl_INT64_C(c)
920# endif
921# ifndef UINT64_C
922# define UINT64_C(c) PeRl_UINT64_C(c)
923# endif
1109a392 924
f2f9e01d
KW
925# ifndef I_STDINT
926 typedef I64TYPE PERL_INTMAX_T;
927 typedef U64TYPE PERL_UINTMAX_T;
1109a392 928# endif
f2f9e01d
KW
929# ifndef INTMAX_C
930# define INTMAX_C(c) INT64_C(c)
931# endif
932# ifndef UINTMAX_C
933# define UINTMAX_C(c) UINT64_C(c)
934# endif
935
936#else /* below QUADKIND is undefined */
937
938/* Perl doesn't work on 16 bit systems, so must be 32 bit */
939# ifndef I_STDINT
940 typedef I32TYPE PERL_INTMAX_T;
941 typedef U32TYPE PERL_UINTMAX_T;
942# endif
943# ifndef INTMAX_C
944# define INTMAX_C(c) INT32_C(c)
945# endif
946# ifndef UINTMAX_C
947# define UINTMAX_C(c) UINT32_C(c)
948# endif
949
950#endif /* no QUADKIND */
951
952#ifdef PERL_CORE
1109a392
MHM
953
954/* byte-swapping functions for big-/little-endian conversion */
955# define _swab_16_(x) ((U16)( \
f2f9e01d
KW
956 (((U16)(x) & UINT16_C(0x00ff)) << 8) | \
957 (((U16)(x) & UINT16_C(0xff00)) >> 8) ))
1109a392
MHM
958
959# define _swab_32_(x) ((U32)( \
f2f9e01d
KW
960 (((U32)(x) & UINT32_C(0x000000ff)) << 24) | \
961 (((U32)(x) & UINT32_C(0x0000ff00)) << 8) | \
962 (((U32)(x) & UINT32_C(0x00ff0000)) >> 8) | \
963 (((U32)(x) & UINT32_C(0xff000000)) >> 24) ))
1109a392
MHM
964
965# ifdef HAS_QUAD
966# define _swab_64_(x) ((U64)( \
f2f9e01d
KW
967 (((U64)(x) & UINT64_C(0x00000000000000ff)) << 56) | \
968 (((U64)(x) & UINT64_C(0x000000000000ff00)) << 40) | \
969 (((U64)(x) & UINT64_C(0x0000000000ff0000)) << 24) | \
970 (((U64)(x) & UINT64_C(0x00000000ff000000)) << 8) | \
971 (((U64)(x) & UINT64_C(0x000000ff00000000)) >> 8) | \
972 (((U64)(x) & UINT64_C(0x0000ff0000000000)) >> 24) | \
973 (((U64)(x) & UINT64_C(0x00ff000000000000)) >> 40) | \
974 (((U64)(x) & UINT64_C(0xff00000000000000)) >> 56) ))
1109a392
MHM
975# endif
976
9c17f24a
NC
977/* The old value was hard coded at 1008. (4096-16) seems to be a bit faster,
978 at least on FreeBSD. YMMV, so experiment. */
979#ifndef PERL_ARENA_SIZE
980#define PERL_ARENA_SIZE 4080
981#endif
982
ccb2c8b8 983/* Maximum level of recursion */
2b9dff67
RGS
984#ifndef PERL_SUB_DEPTH_WARN
985#define PERL_SUB_DEPTH_WARN 100
ccb2c8b8
RGS
986#endif
987
1109a392
MHM
988#endif /* PERL_CORE */
989
e839e6ed
DM
990/* Maximum number of args that may be passed to an OP_MULTICONCAT op.
991 * It determines the size of local arrays in S_maybe_multiconcat() and
992 * pp_multiconcat().
993 */
994#define PERL_MULTICONCAT_MAXARG 64
995
996/* The indexes of fields of a multiconcat aux struct.
997 * The fixed fields are followed by nargs+1 const segment lengths,
998 * and if utf8 and non-utf8 differ, a second nargs+1 set for utf8.
999 */
1000
1001#define PERL_MULTICONCAT_IX_NARGS 0 /* number of arguments */
1002#define PERL_MULTICONCAT_IX_PLAIN_PV 1 /* non-utf8 constant string */
1003#define PERL_MULTICONCAT_IX_PLAIN_LEN 2 /* non-utf8 constant string length */
1004#define PERL_MULTICONCAT_IX_UTF8_PV 3 /* utf8 constant string */
1005#define PERL_MULTICONCAT_IX_UTF8_LEN 4 /* utf8 constant string length */
1006#define PERL_MULTICONCAT_IX_LENGTHS 5 /* first of nargs+1 const segment lens */
1007#define PERL_MULTICONCAT_HEADER_SIZE 5 /* The number of fields of a
1008 multiconcat header */
1009
bdf3085f
NC
1010/* We no longer default to creating a new SV for GvSV.
1011 Do this before embed. */
1012#ifndef PERL_CREATE_GVSV
7459f06b
NC
1013# ifndef PERL_DONT_CREATE_GVSV
1014# define PERL_DONT_CREATE_GVSV
1015# endif
bdf3085f
NC
1016#endif
1017
ca0c25f6
NC
1018#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
1019#define PERL_USES_PL_PIDSTATUS
1020#endif
1021
739a0b84 1022#if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(__SYMBIAN32__)
a62746fa
RGS
1023#define PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION
1024#endif
1025
c31fac66
GS
1026#define MEM_SIZE Size_t
1027
1936d2a7
NC
1028/* Round all values passed to malloc up, by default to a multiple of
1029 sizeof(size_t)
1030*/
1031#ifndef PERL_STRLEN_ROUNDUP_QUANTUM
1032#define PERL_STRLEN_ROUNDUP_QUANTUM Size_t_size
1033#endif
1034
f1200559
WH
1035/* sv_grow() will expand strings by at least a certain percentage of
1036 the previously *used* length to avoid excessive calls to realloc().
1037 The default is 25% of the current length.
1038*/
1039#ifndef PERL_STRLEN_EXPAND_SHIFT
1040# define PERL_STRLEN_EXPAND_SHIFT 2
1041#endif
1042
4bd4e933
SH
1043/* This use of offsetof() requires /Zc:offsetof- for VS2017 (and presumably
1044 * onwards) when building Socket.xs, but we can just use a different definition
1045 * for STRUCT_OFFSET instead. */
1046#if defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1910
1047# define STRUCT_OFFSET(s,m) (Size_t)(&(((s *)0)->m))
1048#else
1049# include <stddef.h>
1050# define STRUCT_OFFSET(s,m) offsetof(s,m)
1051#endif
d0b86e2f
BF
1052
1053/* ptrdiff_t is C11, so undef it under pedantic builds */
1054#ifdef PERL_GCC_PEDANTIC
1055# undef HAS_PTRDIFF_T
51371543
GS
1056#endif
1057
9969cdde 1058#ifndef __SYMBIAN32__
d54fbe84 1059# include <string.h>
51371543
GS
1060#endif
1061
55497cff
PP
1062/* This comes after <stdlib.h> so we don't try to change the standard
1063 * library prototypes; we'll use our own in proto.h instead. */
03a14243 1064
4633a7c4 1065#ifdef MYMALLOC
86058a2d 1066# ifdef PERL_POLLUTE_MALLOC
ee13e175 1067# ifndef PERL_EXTMALLOC_DEF
86058a2d
GS
1068# define Perl_malloc malloc
1069# define Perl_calloc calloc
1070# define Perl_realloc realloc
1071# define Perl_mfree free
ee13e175 1072# endif
86058a2d
GS
1073# else
1074# define EMBEDMYMALLOC /* for compatibility */
1075# endif
827e134a 1076
651b9576
GS
1077# define safemalloc Perl_malloc
1078# define safecalloc Perl_calloc
1079# define saferealloc Perl_realloc
1080# define safefree Perl_mfree
22f7c9c9
JH
1081# define CHECK_MALLOC_TOO_LATE_FOR_(code) STMT_START { \
1082 if (!PL_tainting && MallocCfg_ptr[MallocCfg_cfg_env_read]) \
1083 code; \
1084 } STMT_END
1085# define CHECK_MALLOC_TOO_LATE_FOR(ch) \
1086 CHECK_MALLOC_TOO_LATE_FOR_(MALLOC_TOO_LATE_FOR(ch))
1087# define panic_write2(s) write(2, s, strlen(s))
1088# define CHECK_MALLOC_TAINT(newval) \
1089 CHECK_MALLOC_TOO_LATE_FOR_( \
1090 if (newval) { \
acfd4d8e 1091 PERL_UNUSED_RESULT(panic_write2("panic: tainting with $ENV{PERL_MALLOC_OPT}\n"));\
22f7c9c9 1092 exit(1); })
22f7c9c9 1093# define MALLOC_CHECK_TAINT(argc,argv,env) STMT_START { \
b0891165 1094 if (doing_taint(argc,argv,env)) { \
22f7c9c9
JH
1095 MallocCfg_ptr[MallocCfg_skip_cfg_env] = 1; \
1096 }} STMT_END;
f2517201
GS
1097#else /* MYMALLOC */
1098# define safemalloc safesysmalloc
1099# define safecalloc safesyscalloc
1100# define saferealloc safesysrealloc
1101# define safefree safesysfree
22f7c9c9
JH
1102# define CHECK_MALLOC_TOO_LATE_FOR(ch) ((void)0)
1103# define CHECK_MALLOC_TAINT(newval) ((void)0)
1104# define MALLOC_CHECK_TAINT(argc,argv,env)
55497cff 1105#endif /* MYMALLOC */
4633a7c4 1106
fe13d51d 1107/* diag_listed_as: "-T" is on the #! line, it must also be used on the command line */
27da23d5 1108#define TOO_LATE_FOR_(ch,what) Perl_croak(aTHX_ "\"-%c\" is on the #! line, it must also be used on the command line%s", (char)(ch), what)
22f7c9c9
JH
1109#define TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, "")
1110#define MALLOC_TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, " with $ENV{PERL_MALLOC_OPT}")
1111#define MALLOC_CHECK_TAINT2(argc,argv) MALLOC_CHECK_TAINT(argc,argv,NULL)
1112
fc36a67e 1113#ifndef memzero
04322328 1114# define memzero(d,l) memset(d,0,l)
d9d8d8de 1115#endif
378cc40b 1116
ae986130 1117#ifdef I_NETINET_IN
79072805 1118# include <netinet/in.h>
ae986130
LW
1119#endif
1120
28e8609d
JH
1121#ifdef I_ARPA_INET
1122# include <arpa/inet.h>
1123#endif
1124
1aef975c 1125#ifdef I_SYS_STAT
84902520 1126# include <sys/stat.h>
1aef975c 1127#endif
79072805 1128
287a962e
JD
1129/* Microsoft VC's sys/stat.h defines all S_Ixxx macros except S_IFIFO.
1130 This definition should ideally go into win32/win32.h, but S_IFIFO is
1131 used later here in perl.h before win32/win32.h is being included. */
1132#if !defined(S_IFIFO) && defined(_S_IFIFO)
1133# define S_IFIFO _S_IFIFO
1134#endif
1135
cc3315ba 1136/* The stat macros for Unisoft System V/88 (and derivatives
a0d0e21e
LW
1137 like UTekV) are broken, sometimes giving false positives. Undefine
1138 them here and let the code below set them to proper values.
1139
1140 The ghs macro stands for GreenHills Software C-1.8.5 which
1141 is the C compiler for sysV88 and the various derivatives.
1142 This header file bug is corrected in gcc-2.5.8 and later versions.
1143 --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */
1144
cc3315ba 1145#if defined(m88k) && defined(ghs)
79072805
LW
1146# undef S_ISDIR
1147# undef S_ISCHR
1148# undef S_ISBLK
1149# undef S_ISREG
1150# undef S_ISFIFO
1151# undef S_ISLNK
ee0007ab 1152#endif
135863df 1153
9245da2a 1154#include <time.h>
663a0e37 1155
fe14fcc3 1156#ifdef I_SYS_TIME
85e6fe83 1157# ifdef I_SYS_TIME_KERNEL
663a0e37
LW
1158# define KERNEL
1159# endif
1160# include <sys/time.h>
85e6fe83 1161# ifdef I_SYS_TIME_KERNEL
663a0e37
LW
1162# undef KERNEL
1163# endif
a687059c 1164#endif
135863df 1165
55497cff 1166#if defined(HAS_TIMES) && defined(I_SYS_TIMES)
85e6fe83 1167# include <sys/times.h>
d9d8d8de 1168#endif
8d063cd8 1169
663a0e37 1170#include <errno.h>
1e743fda 1171
acfe0abc 1172#if defined(WIN32) && defined(PERL_IMPLICIT_SYS)
b4748376
NIS
1173# define WIN32SCK_IS_STDSCK /* don't pull in custom wsock layer */
1174#endif
1175
da70cfc6 1176#if defined(HAS_SOCKET) && !defined(WIN32) /* WIN32 handles sockets via win32.h */
1e743fda
JH
1177# include <sys/socket.h>
1178# if defined(USE_SOCKS) && defined(I_SOCKS)
1179# if !defined(INCLUDE_PROTOTYPES)
1180# define INCLUDE_PROTOTYPES /* for <socks.h> */
1181# define PERL_SOCKS_NEED_PROTOTYPES
1182# endif
1183# include <socks.h>
1184# ifdef PERL_SOCKS_NEED_PROTOTYPES /* keep cpp space clean */
1185# undef INCLUDE_PROTOTYPES
1186# undef PERL_SOCKS_NEED_PROTOTYPES
ed6116ce 1187# endif
d460ef45 1188# endif
1e743fda 1189# ifdef I_NETDB
2986a63f
JH
1190# ifdef NETWARE
1191# include<stdio.h>
1192# endif
1e743fda
JH
1193# include <netdb.h>
1194# endif
1195# ifndef ENOTSOCK
1196# ifdef I_NET_ERRNO
1197# include <net/errno.h>
1198# endif
1199# endif
1200#endif
1201
fa0a29af 1202/* sockatmark() is so new (2001) that many places might have it hidden
29820b6d
MHM
1203 * behind some -D_BLAH_BLAH_SOURCE guard. The __THROW magic is required
1204 * e.g. in Gentoo, see http://bugs.gentoo.org/show_bug.cgi?id=12605 */
fa0a29af 1205#if defined(HAS_SOCKATMARK) && !defined(HAS_SOCKATMARK_PROTO)
29820b6d
MHM
1206# if defined(__THROW) && defined(__GLIBC__)
1207int sockatmark(int) __THROW;
1208# else
2ef53570 1209int sockatmark(int);
29820b6d 1210# endif
2ef53570
JH
1211#endif
1212
7e827271 1213#if defined(__osf__) && defined(__cplusplus) && !defined(_XOPEN_SOURCE_EXTENDED) /* Tru64 "cxx" (C++), see hints/dec_osf.sh for why the _XOPEN_SOURCE_EXTENDED cannot be defined. */
45d3b546
JH
1214EXTERN_C int fchdir(int);
1215EXTERN_C int flock(int, int);
1216EXTERN_C int fseeko(FILE *, off_t, int);
1217EXTERN_C off_t ftello(FILE *);
1218#endif
1219
7e827271 1220#if defined(__SUNPRO_CC) /* SUNWspro CC (C++) */
1ccb7c8d
JH
1221EXTERN_C char *crypt(const char *, const char *);
1222#endif
1223
a54aca4b 1224#if defined(__cplusplus) && defined(__CYGWIN__)
667e2948
SP
1225EXTERN_C char *crypt(const char *, const char *);
1226#endif
1227
1e743fda
JH
1228#ifdef SETERRNO
1229# undef SETERRNO /* SOCKS might have defined this */
ed6116ce 1230#endif
f86702cc
PP
1231
1232#ifdef VMS
1233# define SETERRNO(errcode,vmserrcode) \
1234 STMT_START { \
1235 set_errno(errcode); \
1236 set_vaxc_errno(vmserrcode); \
1237 } STMT_END
4ee39169
CS
1238# define dSAVEDERRNO int saved_errno; unsigned saved_vms_errno
1239# define dSAVE_ERRNO int saved_errno = errno; unsigned saved_vms_errno = vaxc$errno
1240# define SAVE_ERRNO ( saved_errno = errno, saved_vms_errno = vaxc$errno )
1241# define RESTORE_ERRNO SETERRNO(saved_errno, saved_vms_errno)
1242
93189314
JH
1243# define LIB_INVARG LIB$_INVARG
1244# define RMS_DIR RMS$_DIR
1245# define RMS_FAC RMS$_FAC
1246# define RMS_FEX RMS$_FEX
1247# define RMS_FNF RMS$_FNF
1248# define RMS_IFI RMS$_IFI
1249# define RMS_ISI RMS$_ISI
1250# define RMS_PRV RMS$_PRV
1251# define SS_ACCVIO SS$_ACCVIO
1252# define SS_DEVOFFLINE SS$_DEVOFFLINE
1253# define SS_IVCHAN SS$_IVCHAN
1254# define SS_NORMAL SS$_NORMAL
8a9f18be 1255# define SS_NOPRIV SS$_NOPRIV
4388f261 1256# define SS_BUFFEROVF SS$_BUFFEROVF
748a9306 1257#else
93189314
JH
1258# define LIB_INVARG 0
1259# define RMS_DIR 0
1260# define RMS_FAC 0
1261# define RMS_FEX 0
1262# define RMS_FNF 0
1263# define RMS_IFI 0
1264# define RMS_ISI 0
1265# define RMS_PRV 0
1266# define SS_ACCVIO 0
1267# define SS_DEVOFFLINE 0
1268# define SS_IVCHAN 0
1269# define SS_NORMAL 0
8a9f18be 1270# define SS_NOPRIV 0
4388f261 1271# define SS_BUFFEROVF 0
748a9306 1272#endif
ed6116ce 1273
6ca940a9
TC
1274#ifdef WIN32
1275# define dSAVEDERRNO int saved_errno; DWORD saved_win32_errno
1276# define dSAVE_ERRNO int saved_errno = errno; DWORD saved_win32_errno = GetLastError()
1277# define SAVE_ERRNO ( saved_errno = errno, saved_win32_errno = GetLastError() )
1278# define RESTORE_ERRNO ( errno = saved_errno, SetLastError(saved_win32_errno) )
1279#endif
1280
1281#ifdef OS2
1282# define dSAVEDERRNO int saved_errno; unsigned long saved_os2_errno
1283# define dSAVE_ERRNO int saved_errno = errno; unsigned long saved_os2_errno = Perl_rc
1284# define SAVE_ERRNO ( saved_errno = errno, saved_os2_errno = Perl_rc )
1285# define RESTORE_ERRNO ( errno = saved_errno, Perl_rc = saved_os2_errno )
1286#endif
1287
1288#ifndef SETERRNO
1289# define SETERRNO(errcode,vmserrcode) (errno = (errcode))
1290#endif
1291
1292#ifndef dSAVEDERRNO
1293# define dSAVEDERRNO int saved_errno
1294# define dSAVE_ERRNO int saved_errno = errno
1295# define SAVE_ERRNO (saved_errno = errno)
1296# define RESTORE_ERRNO (errno = saved_errno)
1297#endif
1298
f5fa9033 1299#define ERRSV GvSVn(PL_errgv)
dfd167e9 1300
b4f8d149 1301/* contains inlined gv_add_by_type */
dfd167e9 1302#define CLEAR_ERRSV() STMT_START { \
b4f8d149
DD
1303 SV ** const svp = &GvSV(PL_errgv); \
1304 if (!*svp) { \
a1b60c8d 1305 *svp = newSVpvs(""); \
b4f8d149
DD
1306 } else if (SvREADONLY(*svp)) { \
1307 SvREFCNT_dec_NN(*svp); \
b4f8d149 1308 *svp = newSVpvs(""); \
dfd167e9 1309 } else { \
b4f8d149 1310 SV *const errsv = *svp; \
a1b60c8d 1311 SvPVCLEAR(errsv); \
b4f8d149 1312 SvPOK_only(errsv); \
dfd167e9
NC
1313 if (SvMAGICAL(errsv)) { \
1314 mg_free(errsv); \
1315 } \
dfd167e9
NC
1316 } \
1317 } STMT_END
1318
1319
414bf5ae
MHM
1320#ifdef PERL_CORE
1321# define DEFSV (0 + GvSVn(PL_defgv))
55b5114f
FC
1322# define DEFSV_set(sv) \
1323 (SvREFCNT_dec(GvSV(PL_defgv)), GvSV(PL_defgv) = SvREFCNT_inc(sv))
1324# define SAVE_DEFSV \
1325 ( \
1326 save_gp(PL_defgv, 0), \
1327 GvINTRO_off(PL_defgv), \
1328 SAVEGENERICSV(GvSV(PL_defgv)), \
1329 GvSV(PL_defgv) = NULL \
1330 )
414bf5ae
MHM
1331#else
1332# define DEFSV GvSVn(PL_defgv)
55b5114f
FC
1333# define DEFSV_set(sv) (GvSV(PL_defgv) = (sv))
1334# define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
414bf5ae 1335#endif
38a03e6e 1336
55497cff 1337#ifndef errno
5ff3f7a4
GS
1338 extern int errno; /* ANSI allows errno to be an lvalue expr.
1339 * For example in multithreaded environments
1340 * something like this might happen:
1341 * extern int *_errno(void);
1342 * #define errno (*_errno()) */
d9d8d8de 1343#endif
663a0e37 1344
7e996671
KW
1345#define UNKNOWN_ERRNO_MSG "(unknown)"
1346
b21d8587
AC
1347#if VMS
1348#define Strerror(e) strerror((e), vaxc$errno)
1349#else
1350#define Strerror(e) strerror(e)
35c8bce7 1351#endif
663a0e37 1352
2304df62 1353#ifdef I_SYS_IOCTL
79072805
LW
1354# ifndef _IOCTL_
1355# include <sys/ioctl.h>
1356# endif
a687059c
LW
1357#endif
1358
ee0007ab 1359#if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
79072805
LW
1360# ifdef HAS_SOCKETPAIR
1361# undef HAS_SOCKETPAIR
1362# endif
2304df62
AD
1363# ifdef I_NDBM
1364# undef I_NDBM
79072805 1365# endif
a687059c
LW
1366#endif
1367
02fc2eee
NC
1368#ifndef HAS_SOCKETPAIR
1369# ifdef HAS_SOCKET
1370# define socketpair Perl_my_socketpair
1371# endif
1372#endif
1373
a687059c 1374#if INTSIZE == 2
79072805
LW
1375# define htoni htons
1376# define ntohi ntohs
a687059c 1377#else
79072805
LW
1378# define htoni htonl
1379# define ntohi ntohl
a687059c
LW
1380#endif
1381
a0d0e21e 1382/* Configure already sets Direntry_t */
35c8bce7 1383#if defined(I_DIRENT)
da5fdda8
AC
1384# include <dirent.h>
1385#elif defined(I_SYS_NDIR)
1386# include <sys/ndir.h>
1387#elif defined(I_SYS_DIR)
1388# include <sys/dir.h>
4633a7c4 1389#endif
a687059c 1390
c623bd54
LW
1391/*
1392 * The following gobbledygook brought to you on behalf of __STDC__.
1393 * (I could just use #ifndef __STDC__, but this is more bulletproof
1394 * in the face of half-implementations.)
1395 */
1396
21e89b5f 1397#if defined(I_SYSMODE)
ca6e1c26
JH
1398#include <sys/mode.h>
1399#endif
1400
c623bd54
LW
1401#ifndef S_IFMT
1402# ifdef _S_IFMT
1403# define S_IFMT _S_IFMT
1404# else
1405# define S_IFMT 0170000
1406# endif
1407#endif
1408
1409#ifndef S_ISDIR
1410# define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
1411#endif
1412
1413#ifndef S_ISCHR
1414# define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
1415#endif
1416
1417#ifndef S_ISBLK
fe14fcc3
LW
1418# ifdef S_IFBLK
1419# define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
1420# else
1421# define S_ISBLK(m) (0)
1422# endif
c623bd54
LW
1423#endif
1424
1425#ifndef S_ISREG
1426# define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
1427#endif
1428
1429#ifndef S_ISFIFO
fe14fcc3
LW
1430# ifdef S_IFIFO
1431# define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
1432# else
1433# define S_ISFIFO(m) (0)
1434# endif
c623bd54
LW
1435#endif
1436
1437#ifndef S_ISLNK
da5fdda8
AC
1438# ifdef _S_ISLNK
1439# define S_ISLNK(m) _S_ISLNK(m)
1440# elif defined(_S_IFLNK)
1441# define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
1442# elif defined(S_IFLNK)
1443# define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
1444# else
1445# define S_ISLNK(m) (0)
1446# endif
c623bd54
LW
1447#endif
1448
1449#ifndef S_ISSOCK
da5fdda8
AC
1450# ifdef _S_ISSOCK
1451# define S_ISSOCK(m) _S_ISSOCK(m)
1452# elif defined(_S_IFSOCK)
1453# define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
1454# elif defined(S_IFSOCK)
1455# define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
1456# else
1457# define S_ISSOCK(m) (0)
1458# endif
c623bd54
LW
1459#endif
1460
1461#ifndef S_IRUSR
1462# ifdef S_IREAD
1463# define S_IRUSR S_IREAD
1464# define S_IWUSR S_IWRITE
1465# define S_IXUSR S_IEXEC
1466# else
1467# define S_IRUSR 0400
1468# define S_IWUSR 0200
1469# define S_IXUSR 0100
1470# endif
fac7cdfc 1471#endif
1472
1473#ifndef S_IRGRP
1474# ifdef S_IRUSR
1475# define S_IRGRP (S_IRUSR>>3)
1476# define S_IWGRP (S_IWUSR>>3)
1477# define S_IXGRP (S_IXUSR>>3)
1478# else
1479# define S_IRGRP 0040
1480# define S_IWGRP 0020
1481# define S_IXGRP 0010
1482# endif
1483#endif
1484
1485#ifndef S_IROTH
1486# ifdef S_IRUSR
1487# define S_IROTH (S_IRUSR>>6)
1488# define S_IWOTH (S_IWUSR>>6)
1489# define S_IXOTH (S_IXUSR>>6)
1490# else
1491# define S_IROTH 0040
1492# define S_IWOTH 0020
1493# define S_IXOTH 0010
1494# endif
c623bd54
LW
1495#endif
1496
1497#ifndef S_ISUID
1498# define S_ISUID 04000
1499#endif
1500
1501#ifndef S_ISGID
1502# define S_ISGID 02000
1503#endif
1504
ca6e1c26
JH
1505#ifndef S_IRWXU
1506# define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
d460ef45 1507#endif
ca6e1c26
JH
1508
1509#ifndef S_IRWXG
1510# define S_IRWXG (S_IRGRP|S_IWGRP|S_IXGRP)
d460ef45 1511#endif
ca6e1c26
JH
1512
1513#ifndef S_IRWXO
1514# define S_IRWXO (S_IROTH|S_IWOTH|S_IXOTH)
d460ef45 1515#endif
ca6e1c26 1516
b6c36746 1517/* Haiku R1 seems to define S_IREAD and S_IWRITE in <posix/fcntl.h>
c21fb2b8
JH
1518 * which would get included through <sys/file.h >, but that is 3000
1519 * lines in the future. --jhi */
1520
b6c36746 1521#if !defined(S_IREAD) && !defined(__HAIKU__)
ca6e1c26
JH
1522# define S_IREAD S_IRUSR
1523#endif
1524
b6c36746 1525#if !defined(S_IWRITE) && !defined(__HAIKU__)
ca6e1c26
JH
1526# define S_IWRITE S_IWUSR
1527#endif
1528
1529#ifndef S_IEXEC
1530# define S_IEXEC S_IXUSR
1531#endif
1532
a0d0e21e 1533#if defined(cray) || defined(gould) || defined(i860) || defined(pyr)
45d8adaa
LW
1534# define SLOPPYDIVIDE
1535#endif
1536
748a9306
LW
1537#ifdef UV
1538#undef UV
1539#endif
1540
f1519f70
AC
1541/* This used to be conditionally defined based on whether we had a sprintf()
1542 * that correctly returns the string length (as required by C89), but we no
1543 * longer need that. XS modules can (and do) use this name, so it must remain
1544 * a part of the API that's visible to modules. But we no longer document it
1545 * either (because using sprintf() rather than snprintf() is almost always
1546 * a bad idea). */
1547#define my_sprintf sprintf
ce582cee 1548
5b692037
JH
1549/*
1550 * If we have v?snprintf() and the C99 variadic macros, we can just
1551 * use just the v?snprintf(). It is nice to try to trap the buffer
1552 * overflow, however, so if we are DEBUGGING, and we cannot use the
e5afc1ae
DD
1553 * gcc statement expressions, then use the function wrappers which try
1554 * to trap the overflow. If we can use the gcc statement expressions,
1555 * we can try that even with the version that uses the C99 variadic
1556 * macros.
5b692037
JH
1557 */
1558
1208b3dd 1559/* Note that we do not check against snprintf()/vsnprintf() returning
4059ba87
AC
1560 * negative values because that is non-standard behaviour and we use
1561 * snprintf/vsnprintf only iff HAS_VSNPRINTF has been defined, and
1562 * that should be true only if the snprintf()/vsnprintf() are true
1563 * to the standard. */
1208b3dd 1564
571ee10c 1565#define PERL_SNPRINTF_CHECK(len, max, api) STMT_START { if ((max) > 0 && (Size_t)len > (max)) Perl_croak_nocontext("panic: %s buffer overflow", STRINGIFY(api)); } STMT_END
e8549682 1566
a4eca1d4
JH
1567#ifdef USE_QUADMATH
1568# define my_snprintf Perl_my_snprintf
1569# define PERL_MY_SNPRINTF_GUARDED
4059ba87 1570#elif defined(HAS_SNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
5b692037 1571# ifdef PERL_USE_GCC_BRACE_GROUPS
e8549682 1572# define my_snprintf(buffer, max, ...) ({ int len = snprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, snprintf); len; })
1208b3dd 1573# define PERL_MY_SNPRINTF_GUARDED
5b692037 1574# else
e8549682 1575# define my_snprintf(buffer, max, ...) snprintf(buffer, max, __VA_ARGS__)
5b692037
JH
1576# endif
1577#else
1578# define my_snprintf Perl_my_snprintf
1208b3dd 1579# define PERL_MY_SNPRINTF_GUARDED
5b692037
JH
1580#endif
1581
a4eca1d4
JH
1582/* There is no quadmath_vsnprintf, and therefore my_vsnprintf()
1583 * dies if called under USE_QUADMATH. */
4059ba87 1584#if defined(HAS_VSNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
5b692037 1585# ifdef PERL_USE_GCC_BRACE_GROUPS
e8549682 1586# define my_vsnprintf(buffer, max, ...) ({ int len = vsnprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, vsnprintf); len; })
1208b3dd 1587# define PERL_MY_VSNPRINTF_GUARDED
5b692037 1588# else
e8549682 1589# define my_vsnprintf(buffer, max, ...) vsnprintf(buffer, max, __VA_ARGS__)
5b692037
JH
1590# endif
1591#else
1592# define my_vsnprintf Perl_my_vsnprintf
1208b3dd 1593# define PERL_MY_VSNPRINTF_GUARDED
5b692037 1594#endif
d9fad198 1595
e8549682
JH
1596/* You will definitely need to use the PERL_MY_SNPRINTF_POST_GUARD()
1597 * or PERL_MY_VSNPRINTF_POST_GUARD() if you otherwise decide to ignore
1598 * the result of my_snprintf() or my_vsnprintf(). (No, you should not
1599 * completely ignore it: otherwise you cannot know whether your output
1600 * was too long.)
1601 *
1602 * int len = my_sprintf(buf, max, ...);
1603 * PERL_MY_SNPRINTF_POST_GUARD(len, max);
1604 *
1605 * The trick is that in certain platforms [a] the my_sprintf() already
1606 * contains the sanity check, while in certain platforms [b] it needs
1607 * to be done as a separate step. The POST_GUARD is that step-- in [a]
1608 * platforms the POST_GUARD actually does nothing since the check has
1609 * already been done. Watch out for the max being the same in both calls.
1610 *
1611 * If you actually use the snprintf/vsnprintf return value already,
1612 * you assumedly are checking its validity somehow. But you can
1613 * insert the POST_GUARD() also in that case. */
1614
1615#ifndef PERL_MY_SNPRINTF_GUARDED
1616# define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, snprintf)
1617#else
1618# define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
1619#endif
1620
1621#ifndef PERL_MY_VSNPRINTF_GUARDED
1622# define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, vsnprintf)
1623#else
1624# define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
1625#endif
1626
a6cc4119
SP
1627#ifdef HAS_STRLCAT
1628# define my_strlcat strlcat
1629#else
1630# define my_strlcat Perl_my_strlcat
1631#endif
1632
6dba01e2
KW
1633#if defined(PERL_CORE) || defined(PERL_EXT)
1634# ifdef HAS_MEMRCHR
1635# define my_memrchr memrchr
1636# else
1637# define my_memrchr S_my_memrchr
1638# endif
1639#endif
1640
a6cc4119
SP
1641#ifdef HAS_STRLCPY
1642# define my_strlcpy strlcpy
1643#else
1644# define my_strlcpy Perl_my_strlcpy
1645#endif
1646
aefb3fa0
DIM
1647#ifdef HAS_STRNLEN
1648# define my_strnlen strnlen
1649#else
1650# define my_strnlen Perl_my_strnlen
1651#endif
1652
05f13f53 1653/*
27d4fb96
PP
1654 The IV type is supposed to be long enough to hold any integral
1655 value or a pointer.
1656 --Andy Dougherty August 1996
1657*/
1658
a22e52b9
JH
1659typedef IVTYPE IV;
1660typedef UVTYPE UV;
8175356b 1661
10cc9d2a 1662#if defined(USE_64_BIT_INT) && defined(HAS_QUAD)
6b8eaf93 1663# if QUADKIND == QUAD_IS_INT64_T && defined(INT64_MAX)
5ff3f7a4
GS
1664# define IV_MAX INT64_MAX
1665# define IV_MIN INT64_MIN
1666# define UV_MAX UINT64_MAX
cae7ae48
JH
1667# ifndef UINT64_MIN
1668# define UINT64_MIN 0
1669# endif
5ff3f7a4
GS
1670# define UV_MIN UINT64_MIN
1671# else
1672# define IV_MAX PERL_QUAD_MAX
1673# define IV_MIN PERL_QUAD_MIN
1674# define UV_MAX PERL_UQUAD_MAX
1675# define UV_MIN PERL_UQUAD_MIN
1676# endif
cf2093f6
JH
1677# define IV_IS_QUAD
1678# define UV_IS_QUAD
79072805 1679#else
8175356b 1680# if defined(INT32_MAX) && IVSIZE == 4
5ff3f7a4
GS
1681# define IV_MAX INT32_MAX
1682# define IV_MIN INT32_MIN
716026f9
DL
1683# ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
1684# define UV_MAX UINT32_MAX
1685# else
1686# define UV_MAX 4294967295U
1687# endif
cae7ae48
JH
1688# ifndef UINT32_MIN
1689# define UINT32_MIN 0
1690# endif
5ff3f7a4
GS
1691# define UV_MIN UINT32_MIN
1692# else
1693# define IV_MAX PERL_LONG_MAX
1694# define IV_MIN PERL_LONG_MIN
1695# define UV_MAX PERL_ULONG_MAX
1696# define UV_MIN PERL_ULONG_MIN
1697# endif
8175356b 1698# if IVSIZE == 8
cf2093f6
JH
1699# define IV_IS_QUAD
1700# define UV_IS_QUAD
de1c2614
JH
1701# ifndef HAS_QUAD
1702# define HAS_QUAD
1703# endif
cf2093f6
JH
1704# else
1705# undef IV_IS_QUAD
1706# undef UV_IS_QUAD
9ea40801 1707#if !defined(PERL_CORE) || defined(USING_MSVC6)
e25d460c
NC
1708/* We think that removing this decade-old undef this will cause too much
1709 breakage on CPAN for too little gain. (See RT #119753)
9ea40801
SH
1710 However, we do need HAS_QUAD in the core for use by the drand48 code,
1711 but not for Win32 VC6 because it has poor __int64 support. */
cb4b14d5 1712# undef HAS_QUAD
e25d460c 1713#endif
cf2093f6 1714# endif
79072805 1715#endif
d7d93a81 1716
6313e544
JH
1717#define Size_t_MAX (~(Size_t)0)
1718#define SSize_t_MAX (SSize_t)(~(Size_t)0 >> 1)
9a543cee 1719
cae7ae48 1720#define IV_DIG (BIT_DIGITS(IVSIZE * 8))
22ec83e3 1721#define UV_DIG (BIT_DIGITS(UVSIZE * 8))
56431972 1722
28e5dec8 1723#ifndef NO_PERL_PRESERVE_IVUV
f5c03d33 1724#define PERL_PRESERVE_IVUV /* We like our integers to stay integers. */
28e5dec8
JH
1725#endif
1726
d460ef45 1727/*
26bb67e2
JH
1728 * The macros INT2PTR and NUM2PTR are (despite their names)
1729 * bi-directional: they will convert int/float to or from pointers.
1730 * However the conversion to int/float are named explicitly:
1731 * PTR2IV, PTR2UV, PTR2NV.
1732 *
1733 * For int conversions we do not need two casts if pointers are
1734 * the same size as IV and UV. Otherwise we need an explicit
1735 * cast (PTRV) to avoid compiler warnings.
1736 */
56431972
RB
1737#if (IVSIZE == PTRSIZE) && (UVSIZE == PTRSIZE)
1738# define PTRV UV
1739# define INT2PTR(any,d) (any)(d)
da5fdda8
AC
1740#elif PTRSIZE == LONGSIZE
1741# define PTRV unsigned long
1742# define PTR2ul(p) (unsigned long)(p)
56431972 1743#else
da5fdda8 1744# define PTRV unsigned
e91e3b10
RB
1745#endif
1746
1747#ifndef INT2PTR
56431972 1748# define INT2PTR(any,d) (any)(PTRV)(d)
42718184 1749#endif
e91e3b10
RB
1750
1751#ifndef PTR2ul
1752# define PTR2ul(p) INT2PTR(unsigned long,p)
1753#endif
1754
56431972
RB
1755#define NUM2PTR(any,d) (any)(PTRV)(d)
1756#define PTR2IV(p) INT2PTR(IV,p)
1757#define PTR2UV(p) INT2PTR(UV,p)
1758#define PTR2NV(p) NUM2PTR(NV,p)
e91e3b10 1759#define PTR2nat(p) (PTRV)(p) /* pointer to integer of PTRSIZE */
d460ef45 1760
8141890a
JH
1761/* According to strict ANSI C89 one cannot freely cast between
1762 * data pointers and function (code) pointers. There are at least
1763 * two ways around this. One (used below) is to do two casts,
1764 * first the other pointer to an (unsigned) integer, and then
1765 * the integer to the other pointer. The other way would be
1766 * to use unions to "overlay" the pointers. For an example of
1767 * the latter technique, see union dirpu in struct xpvio in sv.h.
1768 * The only feasible use is probably temporarily storing
1769 * function pointers in a data pointer (such as a void pointer). */
1770
e91e3b10
RB
1771#define DPTR2FPTR(t,p) ((t)PTR2nat(p)) /* data pointer to function pointer */
1772#define FPTR2DPTR(t,p) ((t)PTR2nat(p)) /* function pointer to data pointer */
8141890a 1773
65202027 1774#ifdef USE_LONG_DOUBLE
f3654d06
JH
1775# if LONG_DOUBLESIZE == DOUBLESIZE
1776# define LONG_DOUBLE_EQUALS_DOUBLE
1777# undef USE_LONG_DOUBLE /* Ouch! */
65202027
DS
1778# endif
1779#endif
1780
2d4389e4
JH
1781/* The following is all to get LDBL_DIG, in order to pick a nice
1782 default value for printing floating point numbers in Gconvert.
1783 (see config.h)
1784*/
63b481b9 1785#ifndef HAS_LDBL_DIG
68d4903c 1786# if LONG_DOUBLESIZE == 10
63b481b9
AC
1787# define LDBL_DIG 18 /* assume IEEE */
1788# elif LONG_DOUBLESIZE == 12
68d4903c 1789# define LDBL_DIG 18 /* gcc? */
63b481b9
AC
1790# elif LONG_DOUBLESIZE == 16
1791# define LDBL_DIG 33 /* assume IEEE */
1792# elif LONG_DOUBLESIZE == DOUBLESIZE
1793# define LDBL_DIG DBL_DIG /* bummer */
68d4903c 1794# endif
2d4389e4
JH
1795#endif
1796
a22e52b9 1797typedef NVTYPE NV;
8175356b 1798
792d8dab
JH
1799#ifdef I_IEEEFP
1800# include <ieeefp.h>
1801#endif
923fc586 1802
c32c3de1
JH
1803#ifdef USING_MSVC6
1804/* VC6 has broken NaN semantics: NaN == NaN returns true instead of false,
1805 * and for example NaN < IV_MIN. */
bcd8bfa9
JH
1806# define NAN_COMPARE_BROKEN
1807#endif
1808#if defined(__DECC) && defined(__osf__)
1809/* Also Tru64 cc has broken NaN comparisons. */
1810# define NAN_COMPARE_BROKEN
c32c3de1 1811#endif
6504068e
JH
1812#if defined(__sgi)
1813# define NAN_COMPARE_BROKEN
1814#endif
c32c3de1 1815
65202027 1816#ifdef USE_LONG_DOUBLE
923fc586
JH
1817# ifdef I_SUNMATH
1818# include <sunmath.h>
1819# endif
84e6cb05 1820# if defined(LDBL_DIG)
05b4a618
JH
1821# define NV_DIG LDBL_DIG
1822# ifdef LDBL_MANT_DIG
1823# define NV_MANT_DIG LDBL_MANT_DIG
1824# endif
1825# ifdef LDBL_MIN
1826# define NV_MIN LDBL_MIN
1827# endif
1828# ifdef LDBL_MAX
1829# define NV_MAX LDBL_MAX
1830# endif
1831# ifdef LDBL_MIN_EXP
1832# define NV_MIN_EXP LDBL_MIN_EXP
1833# endif
1834# ifdef LDBL_MAX_EXP
1835# define NV_MAX_EXP LDBL_MAX_EXP
1836# endif
1837# ifdef LDBL_MIN_10_EXP
1838# define NV_MIN_10_EXP LDBL_MIN_10_EXP
1839# endif
1840# ifdef LDBL_MAX_10_EXP
1841# define NV_MAX_10_EXP LDBL_MAX_10_EXP
1842# endif
1843# ifdef LDBL_EPSILON
1844# define NV_EPSILON LDBL_EPSILON
1845# endif
1846# ifdef LDBL_MAX
1847# define NV_MAX LDBL_MAX
20f6aaab 1848/* Having LDBL_MAX doesn't necessarily mean that we have LDBL_MIN... -Allen */
da5fdda8
AC
1849# elif defined(HUGE_VALL)
1850# define NV_MAX HUGE_VALL
f4a14a62
JH
1851# endif
1852# endif
84e6cb05 1853# if defined(HAS_SQRTL)
8a00eddc
JH
1854# define Perl_acos acosl
1855# define Perl_asin asinl
1856# define Perl_atan atanl
940e3d56
JH
1857# define Perl_atan2 atan2l
1858# define Perl_ceil ceill
1859# define Perl_cos cosl
8a00eddc 1860# define Perl_cosh coshl
940e3d56 1861# define Perl_exp expl
55da5e5b 1862/* no Perl_fabs, but there's PERL_ABS */
940e3d56
JH
1863# define Perl_floor floorl
1864# define Perl_fmod fmodl
1865# define Perl_log logl
8a00eddc 1866# define Perl_log10 log10l
940e3d56
JH
1867# define Perl_pow powl
1868# define Perl_sin sinl
8a00eddc 1869# define Perl_sinh sinhl
940e3d56 1870# define Perl_sqrt sqrtl
8a00eddc
JH
1871# define Perl_tan tanl
1872# define Perl_tanh tanhl
68d4903c 1873# endif
a3540c92 1874/* e.g. libsunmath doesn't have modfl and frexpl as of mid-March 2000 */
05b4a618
JH
1875# ifndef Perl_modf
1876# ifdef HAS_MODFL
1877# define Perl_modf(x,y) modfl(x,y)
51997bc3
NC
1878/* eg glibc 2.2 series seems to provide modfl on ppc and arm, but has no
1879 prototype in <math.h> */
05b4a618 1880# ifndef HAS_MODFL_PROTO
a221a8a5 1881EXTERN_C long double modfl(long double, long double *);
05b4a618
JH
1882# endif
1883# elif (defined(HAS_TRUNCL) || defined(HAS_AINTL)) && defined(HAS_COPYSIGNL)
55954f19 1884 extern long double Perl_my_modfl(long double x, long double *ip);
03476e8e 1885# define Perl_modf(x,y) Perl_my_modfl(x,y)
05b4a618 1886# endif
a3540c92 1887# endif
05b4a618
JH
1888# ifndef Perl_frexp
1889# ifdef HAS_FREXPL
1890# define Perl_frexp(x,y) frexpl(x,y)
da5fdda8 1891# elif defined(HAS_ILOGBL) && defined(HAS_SCALBNL)
05b4a618 1892extern long double Perl_my_frexpl(long double x, int *e);
da5fdda8 1893# define Perl_frexp(x,y) Perl_my_frexpl(x,y)
03476e8e 1894# endif
a3540c92 1895# endif
05b4a618
JH
1896# ifndef Perl_ldexp
1897# ifdef HAS_LDEXPL
1898# define Perl_ldexp(x, y) ldexpl(x,y)
da5fdda8
AC
1899# elif defined(HAS_SCALBNL) && FLT_RADIX == 2
1900# define Perl_ldexp(x,y) scalbnl(x,y)
98181445
JH
1901# endif
1902# endif
38dbb4c5 1903# ifndef Perl_isnan
e4c957f4 1904# if defined(HAS_ISNANL) && !(defined(isnan) && defined(HAS_C99))
758a5d79 1905# define Perl_isnan(x) isnanl(x)
a1115378
JH
1906# elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
1907# define Perl_isnan(x) isnan(x)
758a5d79
JH
1908# endif
1909# endif
1910# ifndef Perl_isinf
e4c957f4 1911# if defined(HAS_ISINFL) && !(defined(isinf) && defined(HAS_C99))
87190886 1912# define Perl_isinf(x) isinfl(x)
a1115378
JH
1913# elif defined(__sgi) && defined(__c99) /* XXX Configure test needed */
1914# define Perl_isinf(x) isinf(x)
bcd8bfa9 1915# elif defined(LDBL_MAX) && !defined(NAN_COMPARE_BROKEN)
efcbf317 1916# define Perl_isinf(x) ((x) > LDBL_MAX || (x) < -LDBL_MAX)
a3540c92
JH
1917# endif
1918# endif
e38461cc
JH
1919# ifndef Perl_isfinite
1920# define Perl_isfinite(x) Perl_isfinitel(x)
1921# endif
84e6cb05
JH
1922#elif defined(USE_QUADMATH) && defined(I_QUADMATH)
1923# include <quadmath.h>
1924# define NV_DIG FLT128_DIG
1925# define NV_MANT_DIG FLT128_MANT_DIG
1926# define NV_MIN FLT128_MIN
1927# define NV_MAX FLT128_MAX
1928# define NV_MIN_EXP FLT128_MIN_EXP
1929# define NV_MAX_EXP FLT128_MAX_EXP
1930# define NV_EPSILON FLT128_EPSILON
1931# define NV_MIN_10_EXP FLT128_MIN_10_EXP
1932# define NV_MAX_10_EXP FLT128_MAX_10_EXP
84e6cb05
JH
1933# define Perl_acos acosq
1934# define Perl_asin asinq
1935# define Perl_atan atanq
1936# define Perl_atan2 atan2q
1937# define Perl_ceil ceilq
1938# define Perl_cos cosq
1939# define Perl_cosh coshq
1940# define Perl_exp expq
1941/* no Perl_fabs, but there's PERL_ABS */
1942# define Perl_floor floorq
1943# define Perl_fmod fmodq
1944# define Perl_log logq
1945# define Perl_log10 log10q
1946# define Perl_pow powq
1947# define Perl_sin sinq
1948# define Perl_sinh sinhq
1949# define Perl_sqrt sqrtq
1950# define Perl_tan tanq
1951# define Perl_tanh tanhq
1952# define Perl_modf(x,y) modfq(x,y)
1953# define Perl_frexp(x,y) frexpq(x,y)
1954# define Perl_ldexp(x, y) ldexpq(x,y)
1955# define Perl_isinf(x) isinfq(x)
1956# define Perl_isnan(x) isnanq(x)
1957# define Perl_isfinite(x) !(isnanq(x) || isinfq(x))
b28053d1
JH
1958# define Perl_fp_class(x) ((x) == 0.0Q ? 0 : isinfq(x) ? 3 : isnanq(x) ? 4 : PERL_ABS(x) < FLT128_MIN ? 2 : 1)
1959# define Perl_fp_class_inf(x) (Perl_fp_class(x) == 3)
1960# define Perl_fp_class_nan(x) (Perl_fp_class(x) == 4)
1961# define Perl_fp_class_norm(x) (Perl_fp_class(x) == 1)
1962# define Perl_fp_class_denorm(x) (Perl_fp_class(x) == 2)
1963# define Perl_fp_class_zero(x) (Perl_fp_class(x) == 0)
65202027 1964#else
2d4389e4 1965# define NV_DIG DBL_DIG
63b481b9
AC
1966# define NV_MANT_DIG DBL_MANT_DIG
1967# define NV_MIN DBL_MIN
1968# define NV_MAX DBL_MAX
1969# define NV_MIN_EXP DBL_MIN_EXP
1970# define NV_MAX_EXP DBL_MAX_EXP
1971# define NV_MIN_10_EXP DBL_MIN_10_EXP
1972# define NV_MAX_10_EXP DBL_MAX_10_EXP
1973# define NV_EPSILON DBL_EPSILON
1974# define NV_MAX DBL_MAX
1975# define NV_MIN DBL_MIN
940e3d56 1976
55da5e5b 1977/* These math interfaces are C89. */
8a00eddc
JH
1978# define Perl_acos acos
1979# define Perl_asin asin
1980# define Perl_atan atan
940e3d56
JH
1981# define Perl_atan2 atan2
1982# define Perl_ceil ceil
1983# define Perl_cos cos
8a00eddc 1984# define Perl_cosh cosh
940e3d56 1985# define Perl_exp exp
55da5e5b 1986/* no Perl_fabs, but there's PERL_ABS */
940e3d56
JH
1987# define Perl_floor floor
1988# define Perl_fmod fmod
1989# define Perl_log log
8a00eddc 1990# define Perl_log10 log10
940e3d56
JH
1991# define Perl_pow pow
1992# define Perl_sin sin
8a00eddc 1993# define Perl_sinh sinh
940e3d56 1994# define Perl_sqrt sqrt
8a00eddc
JH
1995# define Perl_tan tan
1996# define Perl_tanh tanh
940e3d56
JH
1997
1998# define Perl_modf(x,y) modf(x,y)
1999# define Perl_frexp(x,y) frexp(x,y)
2000# define Perl_ldexp(x,y) ldexp(x,y)
2001
1a322af2
JH
2002# ifndef Perl_isnan
2003# ifdef HAS_ISNAN
2004# define Perl_isnan(x) isnan(x)
2005# endif
2006# endif
2007# ifndef Perl_isinf
2008# if defined(HAS_ISINF)
2009# define Perl_isinf(x) isinf(x)
bcd8bfa9 2010# elif defined(DBL_MAX) && !defined(NAN_COMPARE_BROKEN)
efcbf317 2011# define Perl_isinf(x) ((x) > DBL_MAX || (x) < -DBL_MAX)
1a322af2
JH
2012# endif
2013# endif
2014# ifndef Perl_isfinite
2015# ifdef HAS_ISFINITE
2016# define Perl_isfinite(x) isfinite(x)
2017# elif defined(HAS_FINITE)
2018# define Perl_isfinite(x) finite(x)
2019# endif
2020# endif
758a5d79
JH
2021#endif
2022
30404d48
JH
2023/* fpclassify(): C99. It is supposed to be a macro that switches on
2024* the sizeof() of its argument, so there's no need for e.g. fpclassifyl().*/
2025#if !defined(Perl_fp_class) && defined(HAS_FPCLASSIFY)
2026# include <math.h>
25c46df8
JH
2027# if defined(FP_INFINITE) && defined(FP_NAN)
2028# define Perl_fp_class(x) fpclassify(x)
2029# define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2030# define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2031# define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2032# define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2033# define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2034# elif defined(FP_PLUS_INF) && defined(FP_QNAN)
2035/* Some versions of HP-UX (10.20) have (only) fpclassify() but which is
2036 * actually not the C99 fpclassify, with its own set of return defines. */
2037# define Perl_fp_class(x) fpclassify(x)
2038# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2039# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
82947af8 2040# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
25c46df8
JH
2041# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2042# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
1ae51000 2043# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
25c46df8
JH
2044# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2045# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2046# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2047# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2048# else
2049# undef Perl_fp_class /* Unknown set of defines */
2050# endif
30404d48
JH
2051#endif
2052
25c46df8
JH
2053/* fp_classify(): Legacy: VMS, maybe Unicos? The values, however,
2054 * are identical to the C99 fpclassify(). */
2055#if !defined(Perl_fp_class) && defined(HAS_FP_CLASSIFY)
2056# include <math.h>
558f3e66
CB
2057# ifdef __VMS
2058 /* FP_INFINITE and others are here rather than in math.h as C99 stipulates */
2059# include <fp.h>
56610b8f
CB
2060 /* oh, and the isnormal macro has a typo in it! */
2061# undef isnormal
2062# define isnormal(x) Perl_fp_class_norm(x)
558f3e66 2063# endif
25c46df8
JH
2064# if defined(FP_INFINITE) && defined(FP_NAN)
2065# define Perl_fp_class(x) fp_classify(x)
2066# define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2067# define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2068# define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2069# define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2070# define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2071# else
2072# undef Perl_fp_class /* Unknown set of defines */
2073# endif
f279e099 2074#endif
205f51d8 2075
30404d48
JH
2076/* Feel free to check with me for the SGI manpages, SGI testing,
2077 * etcetera, if you want to try getting this to work with IRIX.
2078 *
2079 * - Allen <allens@cpan.org> */
2080
2081/* fpclass(): SysV, at least Solaris and some versions of IRIX. */
758a5d79 2082#if !defined(Perl_fp_class) && (defined(HAS_FPCLASS)||defined(HAS_FPCLASSL))
25c46df8
JH
2083/* Solaris and IRIX have fpclass/fpclassl, but they are using
2084 * an enum typedef, not cpp symbols, and Configure doesn't detect that.
2085 * Define some symbols also as cpp symbols so we can detect them. */
033a6f7a 2086# if defined(__sun) || defined(__sgi) /* XXX Configure test instead */
25c46df8
JH
2087# define FP_PINF FP_PINF
2088# define FP_QNAN FP_QNAN
2089# endif
f279e099 2090# include <math.h>
758a5d79
JH
2091# ifdef I_IEEFP
2092# include <ieeefp.h>
2093# endif
2094# ifdef I_FP
2095# include <fp.h>
2096# endif
2097# if defined(USE_LONG_DOUBLE) && defined(HAS_FPCLASSL)
f279e099 2098# define Perl_fp_class(x) fpclassl(x)
758a5d79 2099# else
f279e099
JH
2100# define Perl_fp_class(x) fpclass(x)
2101# endif
25c46df8 2102# if defined(FP_CLASS_PINF) && defined(FP_CLASS_SNAN)
f279e099
JH
2103# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_CLASS_SNAN)
2104# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_CLASS_QNAN)
2105# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_CLASS_NINF)
2106# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_CLASS_PINF)
2107# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_CLASS_NNORM)
2108# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_CLASS_PNORM)
2109# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_CLASS_NDENORM)
2110# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_CLASS_PDENORM)
2111# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_CLASS_NZERO)
2112# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_CLASS_PZERO)
25c46df8 2113# elif defined(FP_PINF) && defined(FP_QNAN)
f279e099
JH
2114# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2115# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2116# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NINF)
2117# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PINF)
2118# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NNORM)
2119# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PNORM)
2120# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NDENORM)
2121# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PDENORM)
2122# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NZERO)
2123# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PZERO)
25c46df8
JH
2124# else
2125# undef Perl_fp_class /* Unknown set of defines */
758a5d79 2126# endif
758a5d79
JH
2127#endif
2128
30404d48
JH
2129/* fp_class(): Legacy: at least Tru64, some versions of IRIX. */
2130#if !defined(Perl_fp_class) && (defined(HAS_FP_CLASS)||defined(HAS_FP_CLASSL))
758a5d79
JH
2131# include <math.h>
2132# if !defined(FP_SNAN) && defined(I_FP_CLASS)
2133# include <fp_class.h>
2134# endif
25c46df8 2135# if defined(FP_POS_INF) && defined(FP_QNAN)
033a6f7a 2136# ifdef __sgi /* XXX Configure test instead */
25c46df8
JH
2137# ifdef USE_LONG_DOUBLE
2138# define Perl_fp_class(x) fp_class_l(x)
2139# else
2140# define Perl_fp_class(x) fp_class_d(x)
2141# endif
f279e099 2142# else
25c46df8
JH
2143# if defined(USE_LONG_DOUBLE) && defined(HAS_FP_CLASSL)
2144# define Perl_fp_class(x) fp_classl(x)
2145# else
2146# define Perl_fp_class(x) fp_class(x)
2147# endif
f279e099 2148# endif
25c46df8
JH
2149# if defined(FP_POS_INF) && defined(FP_QNAN)
2150# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2151# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2152# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NEG_INF)
2153# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_POS_INF)
2154# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NEG_NORM)
2155# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_POS_NORM)
2156# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NEG_DENORM)
2157# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_POS_DENORM)
2158# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NEG_ZERO)
2159# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_POS_ZERO)
30404d48 2160# else
25c46df8 2161# undef Perl_fp_class /* Unknown set of defines */
30404d48 2162# endif
f279e099 2163# endif
30404d48
JH
2164#endif
2165
052758ae 2166/* class(), _class(): Legacy: AIX. */
758a5d79
JH
2167#if !defined(Perl_fp_class) && defined(HAS_CLASS)
2168# include <math.h>
25c46df8
JH
2169# if defined(FP_PLUS_NORM) && defined(FP_PLUS_INF)
2170# ifndef _cplusplus
2171# define Perl_fp_class(x) class(x)
2172# else
2173# define Perl_fp_class(x) _class(x)
2174# endif
2175# if defined(FP_PLUS_INF) && defined(FP_NANQ)
2176# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_NANS)
2177# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_NANQ)
2178# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2179# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
2180# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2181# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
2182# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2183# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
2184# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2185# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
2186# else
2187# undef Perl_fp_class /* Unknown set of defines */
2188# endif
758a5d79 2189# endif
30404d48
JH
2190#endif
2191
2192/* Win32: _fpclass(), _isnan(), _finite(). */
796ea9ea
JH
2193#ifdef WIN32
2194# ifndef Perl_isnan
2195# define Perl_isnan(x) _isnan(x)
2196# endif
2197# ifndef Perl_isfinite
2198# define Perl_isfinite(x) _finite(x)
2199# endif
2200# ifndef Perl_fp_class_snan
25c46df8
JH
2201/* No simple way to #define Perl_fp_class because _fpclass()
2202 * returns a set of bits. */
796ea9ea
JH
2203# define Perl_fp_class_snan(x) (_fpclass(x) & _FPCLASS_SNAN)
2204# define Perl_fp_class_qnan(x) (_fpclass(x) & _FPCLASS_QNAN)
82947af8 2205# define Perl_fp_class_nan(x) (_fpclass(x) & (_FPCLASS_SNAN|_FPCLASS_QNAN))
796ea9ea
JH
2206# define Perl_fp_class_ninf(x) (_fpclass(x) & _FPCLASS_NINF))
2207# define Perl_fp_class_pinf(x) (_fpclass(x) & _FPCLASS_PINF))
2208# define Perl_fp_class_inf(x) (_fpclass(x) & (_FPCLASS_NINF|_FPCLASS_PINF))
2209# define Perl_fp_class_nnorm(x) (_fpclass(x) & _FPCLASS_NN)
2210# define Perl_fp_class_pnorm(x) (_fpclass(x) & _FPCLASS_PN)
2211# define Perl_fp_class_norm(x) (_fpclass(x) & (_FPCLASS_NN|_FPCLASS_PN))
2212# define Perl_fp_class_ndenorm(x) (_fpclass(x) & _FPCLASS_ND)
2213# define Perl_fp_class_pdenorm(x) (_fpclass(x) & _FPCLASS_PD)
2214# define Perl_fp_class_denorm(x) (_fpclass(x) & (_FPCLASS_ND|_FPCLASS_PD))
2215# define Perl_fp_class_nzero(x) (_fpclass(x) & _FPCLASS_NZ)
2216# define Perl_fp_class_pzero(x) (_fpclass(x) & _FPCLASS_PZ)
2217# define Perl_fp_class_zero(x) (_fpclass(x) & (_FPCLASS_NZ|_FPCLASS_PZ))
2218# endif
f279e099
JH
2219#endif
2220
2221#if !defined(Perl_fp_class_inf) && \
2222 defined(Perl_fp_class_pinf) && defined(Perl_fp_class_ninf)
2223# define Perl_fp_class_inf(x) \
2224 (Perl_fp_class_pinf(x) || Perl_fp_class_ninf(x))
2225#endif
2226
2227#if !defined(Perl_fp_class_nan) && \
2228 defined(Perl_fp_class_snan) && defined(Perl_fp_class_qnan)
2229# define Perl_fp_class_nan(x) \
2230 (Perl_fp_class_snan(x) || Perl_fp_class_qnan(x))
2231#endif
2232
2233#if !defined(Perl_fp_class_zero) && \
2234 defined(Perl_fp_class_pzero) && defined(Perl_fp_class_nzero)
2235# define Perl_fp_class_zero(x) \
2236 (Perl_fp_class_pzero(x) || Perl_fp_class_nzero(x))
2237#endif
2238
2239#if !defined(Perl_fp_class_norm) && \
2240 defined(Perl_fp_class_pnorm) && defined(Perl_fp_class_nnorm)
2241# define Perl_fp_class_norm(x) \
2242 (Perl_fp_class_pnorm(x) || Perl_fp_class_nnorm(x))
2243#endif
2244
2245#if !defined(Perl_fp_class_denorm) && \
2246 defined(Perl_fp_class_pdenorm) && defined(Perl_fp_class_ndenorm)
2247# define Perl_fp_class_denorm(x) \
2248 (Perl_fp_class_pdenorm(x) || Perl_fp_class_ndenorm(x))
796ea9ea 2249#endif
758a5d79 2250
1a322af2
JH
2251#ifdef UNDER_CE
2252int isnan(double d);
2253#endif
2254
758a5d79 2255#ifndef Perl_isnan
1a322af2
JH
2256# ifdef Perl_fp_class_nan
2257# define Perl_isnan(x) Perl_fp_class_nan(x)
da5fdda8
AC
2258# elif defined(HAS_UNORDERED)
2259# define Perl_isnan(x) unordered((x), 0.0)
758a5d79 2260# else
da5fdda8 2261# define Perl_isnan(x) ((x)!=(x))
758a5d79
JH
2262# endif
2263#endif
2264
1a322af2
JH
2265#ifndef Perl_isinf
2266# ifdef Perl_fp_class_inf
2267# define Perl_isinf(x) Perl_fp_class_inf(x)
2268# endif
ca6c63e1
JH
2269#endif
2270
758a5d79 2271#ifndef Perl_isfinite
25c46df8 2272# if defined(HAS_ISFINITE) && !defined(isfinite)
c496ca58 2273# define Perl_isfinite(x) isfinite((double)(x))
4efd38a4 2274# elif defined(HAS_FINITE)
c496ca58 2275# define Perl_isfinite(x) finite((double)(x))
4efd38a4
JH
2276# elif defined(Perl_fp_class_finite)
2277# define Perl_isfinite(x) Perl_fp_class_finite(x)
758a5d79 2278# else
c496ca58
JH
2279/* For the infinities the multiplication returns nan,
2280 * for the nan the multiplication also returns nan,
2281 * for everything else (that is, finite) zero should be returned. */
4efd38a4 2282# define Perl_isfinite(x) (((x) * 0) == 0)
a3540c92 2283# endif
65202027
DS
2284#endif
2285
25c46df8
JH
2286#ifndef Perl_isinf
2287# if defined(Perl_isfinite) && defined(Perl_isnan)
2288# define Perl_isinf(x) !(Perl_isfinite(x)||Perl_isnan(x))
2289# endif
2290#endif
2291
d3685250
JH
2292/* We need Perl_isfinitel (ends with ell) (if available) even when
2293 * not USE_LONG_DOUBLE because the printf code (sv_catpvfn_flags)
2294 * needs that. */
2295#if defined(HAS_LONG_DOUBLE) && !defined(Perl_isfinitel)
2296/* If isfinite() is a macro and looks like we have C99,
2297 * we assume it's the type-aware C99 isfinite(). */
c06e9e3e 2298# if defined(HAS_ISFINITE) && defined(isfinite) && defined(HAS_C99)
d3685250
JH
2299# define Perl_isfinitel(x) isfinite(x)
2300# elif defined(HAS_ISFINITEL)
2301# define Perl_isfinitel(x) isfinitel(x)
2302# elif defined(HAS_FINITEL)
2303# define Perl_isfinitel(x) finitel(x)
2304# elif defined(HAS_INFL) && defined(HAS_NANL)
2305# define Perl_isfinitel(x) !(isinfl(x)||isnanl(x))
16334e6e 2306# else
99bf9e32 2307# define Perl_isfinitel(x) ((x) * 0 == 0) /* See Perl_isfinite. */
d3685250
JH
2308# endif
2309#endif
2310
a36244b7
JH
2311/* The default is to use Perl's own atof() implementation (in numeric.c).
2312 * Usually that is the one to use but for some platforms (e.g. UNICOS)
2313 * it is however best to use the native implementation of atof.
2314 * You can experiment with using your native one by -DUSE_PERL_ATOF=0.
2315 * Some good tests to try out with either setting are t/base/num.t,
205f51d8
AS
2316 * t/op/numconvert.t, and t/op/pack.t. Note that if using long doubles
2317 * you may need to be using a different function than atof! */
a36244b7
JH
2318
2319#ifndef USE_PERL_ATOF
2320# ifndef _UNICOS
2321# define USE_PERL_ATOF
2322# endif
2323#else
2324# if USE_PERL_ATOF == 0
2325# undef USE_PERL_ATOF
2326# endif
2327#endif
2328
2329#ifdef USE_PERL_ATOF
2330# define Perl_atof(s) Perl_my_atof(s)
2331# define Perl_atof2(s, n) Perl_my_atof2(aTHX_ (s), &(n))
2332#else
2333# define Perl_atof(s) (NV)atof(s)
2334# define Perl_atof2(s, n) ((n) = atof(s))
2335#endif
cf2093f6 2336
99abf803
PP
2337/*
2338 * CHAR_MIN and CHAR_MAX are not included here, as the (char) type may be
2339 * ambiguous. It may be equivalent to (signed char) or (unsigned char)
2340 * depending on local options. Until Configure detects this (or at least
2341 * detects whether the "signed" keyword is available) the CHAR ranges
2342 * will not be included. UCHAR functions normally.
2343 * - kja
2344 */
27d4fb96 2345
6ec488b3
AC
2346#define PERL_UCHAR_MIN ((unsigned char)0)
2347#define PERL_UCHAR_MAX ((unsigned char)UCHAR_MAX)
27d4fb96 2348
6ec488b3
AC
2349#define PERL_USHORT_MIN ((unsigned short)0)
2350#define PERL_USHORT_MAX ((unsigned short)USHRT_MAX)
27d4fb96 2351
6ec488b3
AC
2352#define PERL_SHORT_MAX ((short)SHRT_MAX)
2353#define PERL_SHORT_MIN ((short)SHRT_MIN)
27d4fb96 2354
6ec488b3 2355#define PERL_UINT_MAX ((unsigned int)UINT_MAX)
99abf803 2356#define PERL_UINT_MIN ((unsigned int)0)
27d4fb96 2357
6ec488b3
AC
2358#define PERL_INT_MAX ((int)INT_MAX)
2359#define PERL_INT_MIN ((int)INT_MIN)
27d4fb96 2360
6ec488b3 2361#define PERL_ULONG_MAX ((unsigned long)ULONG_MAX)
99abf803 2362#define PERL_ULONG_MIN ((unsigned long)0L)
27d4fb96 2363
6ec488b3
AC
2364#define PERL_LONG_MAX ((long)LONG_MAX)
2365#define PERL_LONG_MIN ((long)LONG_MIN)
760ac839 2366
d7d93a81 2367#ifdef UV_IS_QUAD
99abf803 2368# define PERL_UQUAD_MAX (~(UV)0)
f1c3b19a 2369# define PERL_UQUAD_MIN ((UV)0)
99abf803 2370# define PERL_QUAD_MAX ((IV) (PERL_UQUAD_MAX >> 1))
a6e633de 2371# define PERL_QUAD_MIN (-PERL_QUAD_MAX - ((3 & -1) == 3))
79072805
LW
2372#endif
2373
ee0007ab 2374typedef MEM_SIZE STRLEN;
450a55e4 2375
79072805
LW
2376typedef struct op OP;
2377typedef struct cop COP;
2378typedef struct unop UNOP;
2f7c6295 2379typedef struct unop_aux UNOP_AUX;
79072805
LW
2380typedef struct binop BINOP;
2381typedef struct listop LISTOP;
2382typedef struct logop LOGOP;
79072805
LW
2383typedef struct pmop PMOP;
2384typedef struct svop SVOP;
7934575e 2385typedef struct padop PADOP;
79072805 2386typedef struct pvop PVOP;
79072805 2387typedef struct loop LOOP;
b46e009d 2388typedef struct methop METHOP;
79072805 2389
7aef8e5b 2390#ifdef PERL_CORE
8be227ab
FC
2391typedef struct opslab OPSLAB;
2392typedef struct opslot OPSLOT;
2393#endif
2394
52db365a 2395typedef struct block_hooks BHK;
1830b3d9 2396typedef struct custom_op XOP;
52db365a 2397
cd1541b2
NC
2398typedef struct interpreter PerlInterpreter;
2399
d2b3f365 2400/* SGI's <sys/sema.h> has struct sv */
cc3315ba 2401#if defined(__sgi)
d2b3f365 2402# define STRUCT_SV perl_sv
b8d3c5db
JH
2403#else
2404# define STRUCT_SV sv
2405#endif
2406typedef struct STRUCT_SV SV;
79072805
LW
2407typedef struct av AV;
2408typedef struct hv HV;
2409typedef struct cv CV;
d2f13c59 2410typedef struct p5rx REGEXP;
79072805 2411typedef struct gp GP;
0c30d9ec 2412typedef struct gv GV;
8990e307 2413typedef struct io IO;
c09156bb 2414typedef struct context PERL_CONTEXT;
79072805
LW
2415typedef struct block BLOCK;
2416
2417typedef struct magic MAGIC;
2418typedef struct xpv XPV;
2419typedef struct xpviv XPVIV;
ff68c719 2420typedef struct xpvuv XPVUV;
79072805
LW
2421typedef struct xpvnv XPVNV;
2422typedef struct xpvmg XPVMG;
2423typedef struct xpvlv XPVLV;
d361b004 2424typedef struct xpvinvlist XINVLIST;
79072805
LW
2425typedef struct xpvav XPVAV;
2426typedef struct xpvhv XPVHV;
2427typedef struct xpvgv XPVGV;
2428typedef struct xpvcv XPVCV;
2429typedef struct xpvbm XPVBM;
2430typedef struct xpvfm XPVFM;
8990e307 2431typedef struct xpvio XPVIO;
79072805
LW
2432typedef struct mgvtbl MGVTBL;
2433typedef union any ANY;
5f7fde29
GS
2434typedef struct ptr_tbl_ent PTR_TBL_ENT_t;
2435typedef struct ptr_tbl PTR_TBL_t;
8cf8f3d1
NIS
2436typedef struct clone_params CLONE_PARAMS;
2437
0f94cb1f 2438/* a pad is currently just an AV; but that might change,
7261499d
FC
2439 * so hide the type. */
2440typedef struct padlist PADLIST;
67634234 2441typedef AV PAD;
9b7476d7 2442typedef struct padnamelist PADNAMELIST;
0f94cb1f 2443typedef struct padname PADNAME;
67634234 2444
5a736967
DM
2445/* always enable PERL_OP_PARENT */
2446#if !defined(PERL_OP_PARENT)
5d32d268
DM
2447# define PERL_OP_PARENT
2448#endif
2449
93c10d60
FC
2450/* enable PERL_COPY_ON_WRITE by default */
2451#if !defined(PERL_COPY_ON_WRITE) && !defined(PERL_NO_COW)
2452# define PERL_COPY_ON_WRITE
13b0f67d 2453#endif
07d01d6e 2454
93c10d60 2455#ifdef PERL_COPY_ON_WRITE
db2c6cb3 2456# define PERL_ANY_COW
9f351b45
DM
2457#else
2458# define PERL_SAWAMPERSAND
db2c6cb3
FC
2459#endif
2460
40653c20
FC
2461#if defined(PERL_DEBUG_READONLY_OPS) && !defined(USE_ITHREADS)
2462# error PERL_DEBUG_READONLY_OPS only works with ithreads
2463#endif
2464
378cc40b 2465#include "handy.h"
64935bc6 2466#include "charclass_invlists.h"
a0d0e21e 2467
6b8eaf93 2468#if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_RAWIO)
6b8eaf93
JH
2469# if LSEEKSIZE == 8 && !defined(USE_64_BIT_RAWIO)
2470# define USE_64_BIT_RAWIO /* implicit */
2471# endif
4564133c
JH
2472#endif
2473
6b8eaf93
JH
2474/* Notice the use of HAS_FSEEKO: now we are obligated to always use
2475 * fseeko/ftello if possible. Don't go #defining ftell to ftello yourself,
2476 * however, because operating systems like to do that themself. */
2477#ifndef FSEEKSIZE
2478# ifdef HAS_FSEEKO
2479# define FSEEKSIZE LSEEKSIZE
2480# else
2481# define FSEEKSIZE LONGSIZE
d460ef45 2482# endif
6b8eaf93
JH
2483#endif
2484
2485#if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_STDIO)
6b8eaf93
JH
2486# if FSEEKSIZE == 8 && !defined(USE_64_BIT_STDIO)
2487# define USE_64_BIT_STDIO /* implicit */
2488# endif
2489#endif
4564133c 2490
09458382 2491#ifdef USE_64_BIT_RAWIO
d9b3e12d
JH
2492# ifdef HAS_OFF64_T
2493# undef Off_t
2494# define Off_t off64_t
2495# undef LSEEKSIZE
2496# define LSEEKSIZE 8
5ff3f7a4 2497# endif
d9b3e12d
JH
2498/* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2499 * will trigger defines like the ones below. Some 64-bit environments,
09458382 2500 * however, do not. Therefore we have to explicitly mix and match. */
d9b3e12d
JH
2501# if defined(USE_OPEN64)
2502# define open open64
5ff3f7a4 2503# endif
d9b3e12d
JH
2504# if defined(USE_LSEEK64)
2505# define lseek lseek64
6b8eaf93
JH
2506# else
2507# if defined(USE_LLSEEK)
2508# define lseek llseek
2509# endif
d9b3e12d
JH
2510# endif
2511# if defined(USE_STAT64)
2512# define stat stat64
2513# endif
2514# if defined(USE_FSTAT64)
2515# define fstat fstat64
2516# endif
2517# if defined(USE_LSTAT64)
2518# define lstat lstat64
2519# endif
2520# if defined(USE_FLOCK64)
2521# define flock flock64
2522# endif
2523# if defined(USE_LOCKF64)
2524# define lockf lockf64
2525# endif
2526# if defined(USE_FCNTL64)
2527# define fcntl fcntl64
2528# endif
2529# if defined(USE_TRUNCATE64)
2530# define truncate truncate64
2531# endif
2532# if defined(USE_FTRUNCATE64)
2533# define ftruncate ftruncate64
2534# endif
2535#endif
2536
2537#ifdef USE_64_BIT_STDIO
2538# ifdef HAS_FPOS64_T
2539# undef Fpos_t
2540# define Fpos_t fpos64_t
2541# endif
2542/* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2543 * will trigger defines like the ones below. Some 64-bit environments,
2544 * however, do not. */
2545# if defined(USE_FOPEN64)
2546# define fopen fopen64
2547# endif
2548# if defined(USE_FSEEK64)
6b8eaf93 2549# define fseek fseek64 /* don't do fseeko here, see perlio.c */
d9b3e12d
JH
2550# endif
2551# if defined(USE_FTELL64)
6b8eaf93 2552# define ftell ftell64 /* don't do ftello here, see perlio.c */
d9b3e12d
JH
2553# endif
2554# if defined(USE_FSETPOS64)
2555# define fsetpos fsetpos64
2556# endif
2557# if defined(USE_FGETPOS64)
2558# define fgetpos fgetpos64
2559# endif
2560# if defined(USE_TMPFILE64)
2561# define tmpfile tmpfile64
2562# endif
2563# if defined(USE_FREOPEN64)
2564# define freopen freopen64
5ff3f7a4
GS
2565# endif
2566#endif
2567
e37778c2 2568#if defined(OS2)
2c2d71f5
JH
2569# include "iperlsys.h"
2570#endif
2571
748a9306 2572#ifdef DOSISH
19848b3f
JH
2573# if defined(OS2)
2574# include "os2ish.h"
2575# else
2576# include "dosish.h"
2577# endif
009819bb 2578#elif defined(VMS)
748a9306 2579# include "vmsish.h"
009819bb 2580#elif defined(PLAN9)
19848b3f 2581# include "./plan9/plan9ish.h"
009819bb 2582#elif defined(__VOS__)
196918b0
PG
2583# ifdef __GNUC__
2584# include "./vos/vosish.h"
2585# else
2586# include "vos/vosish.h"
2587# endif
009819bb 2588#elif defined(__SYMBIAN32__)
27da23d5 2589# include "symbian/symbianish.h"
009819bb 2590#elif defined(__HAIKU__)
df00ff3b 2591# include "haiku/haikuish.h"
009819bb 2592#else
19848b3f 2593# include "unixish.h"
13b6e58c
JH
2594#endif
2595
ea34f6bd 2596#ifdef __amigaos4__
3c0208ad
AB
2597# include "amigaos.h"
2598# undef FD_CLOEXEC /* a lie in AmigaOS */
2599#endif
2600
2946a158 2601/* NSIG logic from Configure --> */
2946a158
JH
2602#ifndef NSIG
2603# ifdef _NSIG
2604# define NSIG (_NSIG)
da5fdda8 2605# elif defined(SIGMAX)
2946a158 2606# define NSIG (SIGMAX+1)
da5fdda8 2607# elif defined(SIG_MAX)
2946a158 2608# define NSIG (SIG_MAX+1)
da5fdda8 2609# elif defined(_SIG_MAX)
2946a158 2610# define NSIG (_SIG_MAX+1)
da5fdda8 2611# elif defined(MAXSIG)
2946a158 2612# define NSIG (MAXSIG+1)
da5fdda8 2613# elif defined(MAX_SIG)
2946a158 2614# define NSIG (MAX_SIG+1)
da5fdda8 2615# elif defined(SIGARRAYSIZE)
2946a158 2616# define NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
da5fdda8 2617# elif defined(_sys_nsig)
2946a158 2618# define NSIG (_sys_nsig) /* Solaris 2.5 */
da5fdda8
AC
2619# else
2620 /* Default to some arbitrary number that's big enough to get most
2621 * of the common signals. */
2946a158 2622# define NSIG 50
da5fdda8 2623# endif
2946a158
JH
2624#endif
2625/* <-- NSIG logic from Configure */
2626
13b6e58c
JH
2627#ifndef NO_ENVIRON_ARRAY
2628# define USE_ENVIRON_ARRAY
2629#endif
32f822de 2630
c77b533b
JH
2631/*
2632 * initialise to avoid floating-point exceptions from overflow, etc
2633 */
2634#ifndef PERL_FPU_INIT
2635# ifdef HAS_FPSETMASK
2636# if HAS_FLOATINGPOINT_H
2637# include <floatingpoint.h>
2638# endif
ad3a8c67
NC
2639/* Some operating systems have this as a macro, which in turn expands to a comma
2640 expression, and the last sub-expression is something that gets calculated,
2641 and then they have the gall to warn that a value computed is not used. Hence
2642 cast to void. */
2643# define PERL_FPU_INIT (void)fpsetmask(0)
da5fdda8
AC
2644# elif defined(SIGFPE) && defined(SIG_IGN) && !defined(PERL_MICRO)
2645# define PERL_FPU_INIT PL_sigfpe_saved = (Sighandler_t) signal(SIGFPE, SIG_IGN)
2646# define PERL_FPU_PRE_EXEC { Sigsave_t xfpe; rsignal_save(SIGFPE, PL_sigfpe_saved, &xfpe);
2647# define PERL_FPU_POST_EXEC rsignal_restore(SIGFPE, &xfpe); }
c77b533b 2648# else
da5fdda8 2649# define PERL_FPU_INIT
c77b533b
JH
2650# endif
2651#endif
b35112e7
CS
2652#ifndef PERL_FPU_PRE_EXEC
2653# define PERL_FPU_PRE_EXEC {
2654# define PERL_FPU_POST_EXEC }
2655#endif
c77b533b 2656
a308b05a
JH
2657/* In Tru64 the cc -ieee enables the IEEE math but disables traps.
2658 * We need to reenable the "invalid" trap because otherwise generation
2659 * of NaN values leaves the IEEE fp flags in bad state, leaving any further
2660 * fp ops behaving strangely (Inf + 1 resulting in zero, for example). */
2661#ifdef __osf__
2662# include <machine/fpu.h>
2663# define PERL_SYS_FPU_INIT \
2664 STMT_START { \
2665 ieee_set_fp_control(IEEE_TRAP_ENABLE_INV); \
2666 signal(SIGFPE, SIG_IGN); \
2667 } STMT_END
2668#endif
94a08944
JH
2669/* In IRIX the default for Flush to Zero bit is true,
2670 * which means that results going below the minimum of normal
2671 * floating points go to zero, instead of going denormal/subnormal.
2672 * This is unlike almost any other system running Perl, so let's clear it.
2673 * [perl #123767] IRIX64 blead (ddce084a) opbasic/arith.t failure, originally
2674 * [perl #120426] small numbers shouldn't round to zero if they have extra floating digits
2675 *
2676 * XXX The flush-to-zero behaviour should be a Configure scan.
2677 * To change the behaviour usually requires some system-specific
2678 * incantation, though, like the below. */
2679#ifdef __sgi
2680# include <sys/fpu.h>
2681# define PERL_SYS_FPU_INIT \
2682 STMT_START { \
2683 union fpc_csr csr; \
2684 csr.fc_word = get_fpc_csr(); \
2685 csr.fc_struct.flush = 0; \
2686 set_fpc_csr(csr.fc_word); \
2687 } STMT_END
2688#endif
a308b05a
JH
2689
2690#ifndef PERL_SYS_FPU_INIT
2691# define PERL_SYS_FPU_INIT NOOP
2692#endif
2693
cbec8ebe
DM
2694#ifndef PERL_SYS_INIT3_BODY
2695# define PERL_SYS_INIT3_BODY(argvp,argcp,envp) PERL_SYS_INIT_BODY(argvp,argcp)
ed344e4f
IZ
2696#endif
2697
eb533572 2698/*
dcccc8ff
KW
2699=head1 Miscellaneous Functions
2700
4ad9e498 2701=for apidoc Am|void|PERL_SYS_INIT|int *argc|char*** argv
eb533572 2702Provides system-specific tune up of the C runtime environment necessary to
72d33970 2703run Perl interpreters. This should be called only once, before creating
eb533572
DM
2704any Perl interpreters.
2705
4ad9e498 2706=for apidoc Am|void|PERL_SYS_INIT3|int *argc|char*** argv|char*** env
eb533572 2707Provides system-specific tune up of the C runtime environment necessary to
72d33970 2708run Perl interpreters. This should be called only once, before creating
eb533572
DM
2709any Perl interpreters.
2710
2711=for apidoc Am|void|PERL_SYS_TERM|
2712Provides system-specific clean up of the C runtime environment after
72d33970 2713running Perl interpreters. This should be called only once, after
eb533572
DM
2714freeing any remaining Perl interpreters.
2715
2716=cut
2717 */
2718
cbec8ebe
DM
2719#define PERL_SYS_INIT(argc, argv) Perl_sys_init(argc, argv)
2720#define PERL_SYS_INIT3(argc, argv, env) Perl_sys_init3(argc, argv, env)
d0820ef1 2721#define PERL_SYS_TERM() Perl_sys_term()
cbec8ebe 2722
be708cc0
JH
2723#ifndef PERL_WRITE_MSG_TO_CONSOLE
2724# define PERL_WRITE_MSG_TO_CONSOLE(io, msg, len) PerlIO_write(io, msg, len)
2725#endif
2726
0f31cffe
GS
2727#ifndef MAXPATHLEN
2728# ifdef PATH_MAX
b990c8b2
JH
2729# ifdef _POSIX_PATH_MAX
2730# if PATH_MAX > _POSIX_PATH_MAX
09448d78
JH
2731/* POSIX 1990 (and pre) was ambiguous about whether PATH_MAX
2732 * included the null byte or not. Later amendments of POSIX,
2733 * XPG4, the Austin Group, and the Single UNIX Specification
2734 * all explicitly include the null byte in the PATH_MAX.
2735 * Ditto for _POSIX_PATH_MAX. */
2736# define MAXPATHLEN PATH_MAX
b990c8b2 2737# else
09448d78 2738# define MAXPATHLEN _POSIX_PATH_MAX
b990c8b2
JH
2739# endif
2740# else
2741# define MAXPATHLEN (PATH_MAX+1)
2742# endif
0f31cffe 2743# else
d552bce8 2744# define MAXPATHLEN 1024 /* Err on the large side. */
0f31cffe
GS
2745# endif
2746#endif
2747
c80263a8
SH
2748/* In case Configure was not used (we are using a "canned config"
2749 * such as Win32, or a cross-compilation setup, for example) try going
2750 * by the gcc major and minor versions. One useful URL is
2751 * http://www.ohse.de/uwe/articles/gcc-attributes.html,
2752 * but contrary to this information warn_unused_result seems
2753 * not to be in gcc 3.3.5, at least. --jhi
42bf5550
AD
2754 * Also, when building extensions with an installed perl, this allows
2755 * the user to upgrade gcc and get the right attributes, rather than
2756 * relying on the list generated at Configure time. --AD
c80263a8
SH
2757 * Set these up now otherwise we get confused when some of the <*thread.h>
2758 * includes below indirectly pull in <perlio.h> (which needs to know if we
2759 * have HASATTRIBUTE_FORMAT).
2760 */
2761
4d7c7898 2762#ifndef PERL_MICRO
fc2007d4 2763#if defined __GNUC__ && !defined(__INTEL_COMPILER)
6a387721
RGS
2764# if __GNUC__ == 3 && __GNUC_MINOR__ >= 1 || __GNUC__ > 3 /* 3.1 -> */
2765# define HASATTRIBUTE_DEPRECATED
2766# endif
c80263a8
SH
2767# if __GNUC__ >= 3 /* 3.0 -> */ /* XXX Verify this version */
2768# define HASATTRIBUTE_FORMAT
63cdf24b
SH
2769# if defined __MINGW32__
2770# define PRINTF_FORMAT_NULL_OK
2771# endif
c80263a8
SH
2772# endif
2773# if __GNUC__ >= 3 /* 3.0 -> */
2774# define HASATTRIBUTE_MALLOC
2775# endif
2776# if __GNUC__ == 3 && __GNUC_MINOR__ >= 3 || __GNUC__ > 3 /* 3.3 -> */
2777# define HASATTRIBUTE_NONNULL
2778# endif
2779# if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 || __GNUC__ > 2 /* 2.5 -> */
2780# define HASATTRIBUTE_NORETURN
2781# endif
2782# if __GNUC__ >= 3 /* gcc 3.0 -> */
2783# define HASATTRIBUTE_PURE
2784# endif
42bf5550 2785# if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 /* 3.4 -> */
c80263a8
SH
2786# define HASATTRIBUTE_UNUSED
2787# endif
d324fe49
AD
2788# if __GNUC__ == 3 && __GNUC_MINOR__ == 3 && !defined(__cplusplus)
2789# define HASATTRIBUTE_UNUSED /* gcc-3.3, but not g++-3.3. */
2790# endif
c80263a8
SH
2791# if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 /* 3.4 -> */
2792# define HASATTRIBUTE_WARN_UNUSED_RESULT
2793# endif
2794#endif
00f254e2 2795#endif /* #ifndef PERL_MICRO */
c80263a8 2796
3db8f154 2797/* USE_5005THREADS needs to be after unixish.h as <pthread.h> includes
dd96f567 2798 * <sys/signal.h> which defines NSIG - which will stop inclusion of <signal.h>
32f822de
GS
2799 * this results in many functions being undeclared which bothers C++
2800 * May make sense to have threads after "*ish.h" anyway
2801 */
2802
3baee7cc
JH
2803/* clang Thread Safety Analysis/Annotations/Attributes
2804 * http://clang.llvm.org/docs/ThreadSafetyAnalysis.html
2805 *
bdc795f4 2806 * Available since clang 3.6-ish (appeared in 3.4, but shaky still in 3.5).
3baee7cc 2807 * Apple XCode hijacks __clang_major__ and __clang_minor__
bdc795f4
JH
2808 * (6.1 means really clang 3.6), so needs extra hijinks
2809 * (could probably also test the contents of __apple_build_version__).
3baee7cc
JH
2810 */
2811#if defined(USE_ITHREADS) && defined(I_PTHREAD) && \
2812 defined(__clang__) && \
ab0fe36e
DM
2813 !defined(PERL_GLOBAL_STRUCT) && \
2814 !defined(PERL_GLOBAL_STRUCT_PRIVATE) && \
3baee7cc
JH
2815 !defined(SWIG) && \
2816 ((!defined(__apple_build_version__) && \
bdc795f4 2817 ((__clang_major__ == 3 && __clang_minor__ >= 6) || \
8412ccf9 2818 (__clang_major__ >= 4))) || \
3baee7cc 2819 (defined(__apple_build_version__) && \
bdc795f4
JH
2820 ((__clang_major__ == 6 && __clang_minor__ >= 1) || \
2821 (__clang_major__ >= 7))))
3baee7cc
JH
2822# define PERL_TSA__(x) __attribute__((x))
2823# define PERL_TSA_ACTIVE
2824#else
2825# define PERL_TSA__(x) /* No TSA, make TSA attributes no-ops. */
2826# undef PERL_TSA_ACTIVE
2827#endif
2828
2829/* PERL_TSA_CAPABILITY() is used to annotate typedefs.
2830 * typedef old_type PERL_TSA_CAPABILITY("mutex") new_type;
2831 */
2832#define PERL_TSA_CAPABILITY(x) \
2833 PERL_TSA__(capability(x))
2834
2835/* In the below examples the mutex must be lexically visible, usually
2836 * either as global variables, or as function arguments. */
2837
2838/* PERL_TSA_GUARDED_BY() is used to annotate global variables.
2839 *
2840 * Foo foo PERL_TSA_GUARDED_BY(mutex);
2841 */
2842#define PERL_TSA_GUARDED_BY(x) \
2843 PERL_TSA__(guarded_by(x))
2844
2845/* PERL_TSA_PT_GUARDED_BY() is used to annotate global pointers.
2846 * The data _behind_ the pointer is guarded.
2847 *
2848 * Foo* ptr PERL_TSA_PT_GUARDED_BY(mutex);
2849 */
2850#define PERL_TSA_PT_GUARDED_BY(x) \
2851 PERL_TSA__(pt_guarded_by(x))
2852
2853/* PERL_TSA_REQUIRES() is used to annotate functions.
2854 * The caller MUST hold the resource when calling the function.
2855 *
2856 * void Foo() PERL_TSA_REQUIRES(mutex);
2857 */
2858#define PERL_TSA_REQUIRES(x) \
2859 PERL_TSA__(requires_capability(x))
2860
2861/* PERL_TSA_EXCLUDES() is used to annotate functions.
2862 * The caller MUST NOT hold resource when calling the function.
2863 *
2864 * EXCLUDES should be used when the function first acquires
2865 * the resource and then releases it. Use to avoid deadlock.
2866 *
2867 * void Foo() PERL_TSA_EXCLUDES(mutex);
2868 */
2869#define PERL_TSA_EXCLUDES(x) \
2870 PERL_TSA__(locks_excluded(x))
2871
2872/* PERL_TSA_ACQUIRE() is used to annotate functions.
2873 * The caller MUST NOT hold the resource when calling the function,
2874 * and the function will acquire the resource.
2875 *
2876 * void Foo() PERL_TSA_ACQUIRE(mutex);
2877 */
2878#define PERL_TSA_ACQUIRE(x) \
2879 PERL_TSA__(acquire_capability(x))
2880
2881/* PERL_TSA_RELEASE() is used to annotate functions.
2882 * The caller MUST hold the resource when calling the function,
2883 * and the function will release the resource.
2884 *
2885 * void Foo() PERL_TSA_RELEASE(mutex);
2886 */
2887#define PERL_TSA_RELEASE(x) \
2888 PERL_TSA__(release_capability(x))
2889
2890/* PERL_TSA_NO_TSA is used to annotate functions.
2891 * Used when being intentionally unsafe, or when the code is too
2892 * complicated for the analysis. Use sparingly.
2893 *
2894 * void Foo() PERL_TSA_NO_TSA;
2895 */
2896#define PERL_TSA_NO_TSA \
2897 PERL_TSA__(no_thread_safety_analysis)
2898
2899/* There are more annotations/attributes available, see the clang
2900 * documentation for details. */
2901
3db8f154 2902#if defined(USE_ITHREADS)
2986a63f 2903# ifdef NETWARE
da5fdda8
AC
2904# include <nw5thread.h>
2905# elif defined(WIN32)
2906# include <win32thread.h>
2907# elif defined(OS2)
2908# include "os2thread.h"
2909# elif defined(I_MACH_CTHREADS)
2910# include <mach/cthreads.h>
7f3d1cf1
BH
2911typedef cthread_t perl_os_thread;
2912typedef mutex_t perl_mutex;
2913typedef condition_t perl_cond;
2914typedef void * perl_key;
da5fdda8
AC
2915# elif defined(I_PTHREAD) /* Posix threads */
2916# include <pthread.h>
7f3d1cf1 2917typedef pthread_t perl_os_thread;
3baee7cc 2918typedef pthread_mutex_t PERL_TSA_CAPABILITY("mutex") perl_mutex;
7f3d1cf1
BH
2919typedef pthread_cond_t perl_cond;
2920typedef pthread_key_t perl_key;
da5fdda8 2921# endif
3db8f154 2922#endif /* USE_ITHREADS */
c5be433b 2923
3baee7cc
JH
2924#ifdef PERL_TSA_ACTIVE
2925/* Since most pthread mutex interfaces have not been annotated, we
2926 * need to have these wrappers. The NO_TSA annotation is quite ugly
2927 * but it cannot be avoided in plain C, unlike in C++, where one could
2928 * e.g. use ACQUIRE() with no arg on a mutex lock method.
2929 *
2930 * The bodies of these wrappers are in util.c
2931 *
2932 * TODO: however, some platforms are starting to get these clang
2933 * thread safety annotations for pthreads, for example FreeBSD.
2934 * Do we need a way to a bypass these wrappers? */
67083b7b 2935EXTERN_C int perl_tsa_mutex_lock(perl_mutex* mutex)
3baee7cc
JH
2936 PERL_TSA_ACQUIRE(*mutex)
2937 PERL_TSA_NO_TSA;
67083b7b 2938EXTERN_C int perl_tsa_mutex_unlock(perl_mutex* mutex)
3baee7cc
JH
2939 PERL_TSA_RELEASE(*mutex)
2940 PERL_TSA_NO_TSA;
2941#endif
2942
66a93824 2943#if defined(WIN32)
1feb2720 2944# include "win32.h"
c5be433b
GS
2945#endif
2946
2986a63f
JH
2947#ifdef NETWARE
2948# include "netware.h"
2949#endif
2950
e5218da5 2951#define STATUS_UNIX PL_statusvalue
68dc0745 2952#ifdef VMS
6b88bc9c 2953# define STATUS_NATIVE PL_statusvalue_vms
7a7fd8e0
JM
2954/*
2955 * vaxc$errno is only guaranteed to be valid if errno == EVMSERR, otherwise
ff7298cb 2956 * its contents can not be trusted. Unfortunately, Perl seems to check
7a7fd8e0
JM
2957 * it on exit, so it when PL_statusvalue_vms is updated, vaxc$errno should
2958 * be updated also.
2959 */
2960# include <stsdef.h>
2961# include <ssdef.h>
2962/* Presume this because if VMS changes it, it will require a new
2963 * set of APIs for waiting on children for binary compatibility.
2964 */
2965# define child_offset_bits (8)
2966# ifndef C_FAC_POSIX
2967# define C_FAC_POSIX 0x35A000
2968# endif
2969
2970/* STATUS_EXIT - validates and returns a NATIVE exit status code for the
2971 * platform from the existing UNIX or Native status values.
2972 */
2973
37038d91 2974# define STATUS_EXIT \
7a7fd8e0
JM
2975 (((I32)PL_statusvalue_vms == -1 ? SS$_ABORT : PL_statusvalue_vms) | \
2976 (VMSISH_HUSHED ? STS$M_INHIB_MSG : 0))
2977
7a7fd8e0 2978
fb38d079
JM
2979/* STATUS_NATIVE_CHILD_SET - Calculate UNIX status that matches the child
2980 * exit code and shifts the UNIX value over the correct number of bits to
2981 * be a child status. Usually the number of bits is 8, but that could be
2982 * platform dependent. The NATIVE status code is presumed to have either
2983 * from a child process.
7a7fd8e0
JM
2984 */
2985
fb38d079
JM
2986/* This is complicated. The child processes return a true native VMS
2987 status which must be saved. But there is an assumption in Perl that
2988 the UNIX child status has some relationship to errno values, so
00f254e2 2989 Perl tries to translate it to text in some of the tests.
fb38d079
JM
2990 In order to get the string translation correct, for the error, errno
2991 must be EVMSERR, but that generates a different text message
2992 than what the test programs are expecting. So an errno value must
2993 be derived from the native status value when an error occurs.
2994 That will hide the true native status message. With this version of
2995 perl, the true native child status can always be retrieved so that
2996 is not a problem. But in this case, Pl_statusvalue and errno may
2997 have different values in them.
2998 */
7a7fd8e0 2999
fb38d079 3000# define STATUS_NATIVE_CHILD_SET(n) \
68dc0745 3001 STMT_START { \
2fbb330f
JM
3002 I32 evalue = (I32)n; \
3003 if (evalue == EVMSERR) { \
3004 PL_statusvalue_vms = vaxc$errno; \
3005 PL_statusvalue = evalue; \
7a7fd8e0 3006 } else { \
2fbb330f 3007 PL_statusvalue_vms = evalue; \
fb38d079 3008 if (evalue == -1) { \
3280af22 3009 PL_statusvalue = -1; \
7a7fd8e0
JM
3010 PL_statusvalue_vms = SS$_ABORT; /* Should not happen */ \
3011 } else \
fb38d079 3012 PL_statusvalue = Perl_vms_status_to_unix(evalue, 1); \
2fbb330f 3013 set_vaxc_errno(evalue); \
fb38d079
JM
3014 if ((PL_statusvalue_vms & C_FAC_POSIX) == C_FAC_POSIX) \
3015 set_errno(EVMSERR); \
3016 else set_errno(Perl_vms_status_to_unix(evalue, 0)); \
3017 PL_statusvalue = PL_statusvalue << child_offset_bits; \
2fbb330f 3018 } \
68dc0745 3019 } STMT_END
7a7fd8e0 3020
68dc0745 3021# ifdef VMSISH_STATUS
e5218da5 3022# define STATUS_CURRENT (VMSISH_STATUS ? STATUS_NATIVE : STATUS_UNIX)
68dc0745 3023# else
e5218da5 3024# define STATUS_CURRENT STATUS_UNIX
68dc0745 3025# endif
7a7fd8e0
JM
3026
3027 /* STATUS_UNIX_SET - takes a UNIX/POSIX errno value and attempts to update
3028 * the NATIVE status to an equivalent value. Can not be used to translate
3029 * exit code values as exit code values are not guaranteed to have any
3030 * relationship at all to errno values.
3031 * This is used when Perl is forcing errno to have a specific value.
3032 */
e5218da5 3033# define STATUS_UNIX_SET(n) \
68dc0745 3034 STMT_START { \
7a7fd8e0 3035 I32 evalue = (I32)n; \
0968cdad 3036 PL_statusvalue = evalue; \
3280af22 3037 if (PL_statusvalue != -1) { \
0968cdad
JM
3038 if (PL_statusvalue != EVMSERR) { \
3039 PL_statusvalue &= 0xFFFF; \
3040 if (MY_POSIX_EXIT) \
3041 PL_statusvalue_vms=PL_statusvalue ? SS$_ABORT : SS$_NORMAL;\
3042 else PL_statusvalue_vms = Perl_unix_status_to_vms(evalue); \
3043 } \
3044 else { \
3045 PL_statusvalue_vms = vaxc$errno; \
3046 } \
68dc0745 3047 } \
0968cdad
JM
3048 else PL_statusvalue_vms = SS$_ABORT; \
3049 set_vaxc_errno(PL_statusvalue_vms); \
7a7fd8e0
JM
3050 } STMT_END
3051
3052 /* STATUS_UNIX_EXIT_SET - Takes a UNIX/POSIX exit code and sets
e08e1e1d
JM
3053 * the NATIVE error status based on it.
3054 *
3055 * When in the default mode to comply with the Perl VMS documentation,
3056 * 0 is a success and any other code sets the NATIVE status to a failure
3057 * code of SS$_ABORT.
fb38d079
JM
3058 *
3059 * In the new POSIX EXIT mode, native status will be set so that the
3060 * actual exit code will can be retrieved by the calling program or
3061 * shell.
3062 *
3063 * If the exit code is not clearly a UNIX parent or child exit status,
3064 * it will be passed through as a VMS status.
7a7fd8e0
JM
3065 */
3066
fb38d079 3067# define STATUS_UNIX_EXIT_SET(n) \
7a7fd8e0
JM
3068 STMT_START { \
3069 I32 evalue = (I32)n; \
3070 PL_statusvalue = evalue; \
e08e1e1d
JM
3071 if (MY_POSIX_EXIT) { \
3072 if (evalue <= 0xFF00) { \
3073 if (evalue > 0xFF) \
3074 evalue = (evalue >> child_offset_bits) & 0xFF; \
3075 PL_statusvalue_vms = \
3076 (C_FAC_POSIX | (evalue << 3 ) | \
3077 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1)); \
3078 } else /* forgive them Perl, for they have sinned */ \
3079 PL_statusvalue_vms = evalue; \
3080 } else { \
3081 if (evalue == 0) \
3082 PL_statusvalue_vms = SS$_NORMAL; \
3083 else if (evalue <= 0xFF00) \
3084 PL_statusvalue_vms = SS$_ABORT; \
3085 else { /* forgive them Perl, for they have sinned */ \
3086 if (evalue != EVMSERR) PL_statusvalue_vms = evalue; \
3087 else PL_statusvalue_vms = vaxc$errno; \
3088 /* And obviously used a VMS status value instead of UNIX */ \
3089 PL_statusvalue = EVMSERR; \
3090 } \
3091 set_vaxc_errno(PL_statusvalue_vms); \
3092 } \
68dc0745 3093 } STMT_END
fb38d079 3094
e08e1e1d 3095
6ac6a52b
JM
3096 /* STATUS_EXIT_SET - Takes a NATIVE/UNIX/POSIX exit code
3097 * and sets the NATIVE error status based on it. This special case
3098 * is needed to maintain compatibility with past VMS behavior.
3099 *
3100 * In the default mode on VMS, this number is passed through as
3101 * both the NATIVE and UNIX status. Which makes it different
3102 * that the STATUS_UNIX_EXIT_SET.
3103 *
3104 * In the new POSIX EXIT mode, native status will be set so that the
3105 * actual exit code will can be retrieved by the calling program or
3106 * shell.
3107 *
1a3aec58
JM
3108 * A POSIX exit code is from 0 to 255. If the exit code is higher
3109 * than this, it needs to be assumed that it is a VMS exit code and
3110 * passed through.
6ac6a52b
JM
3111 */
3112
3113# define STATUS_EXIT_SET(n) \
3114 STMT_START { \
3115 I32 evalue = (I32)n; \
3116 PL_statusvalue = evalue; \
3117 if (MY_POSIX_EXIT) \
1a3aec58
JM
3118 if (evalue > 255) PL_statusvalue_vms = evalue; else { \
3119 PL_statusvalue_vms = \
3120 (C_FAC_POSIX | (evalue << 3 ) | \
3121 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1));} \
6ac6a52b
JM
3122 else \
3123 PL_statusvalue_vms = evalue ? evalue : SS$_NORMAL; \
3124 set_vaxc_errno(PL_statusvalue_vms); \
3125 } STMT_END
3126
fb38d079
JM
3127
3128 /* This macro forces a success status */
7a7fd8e0
JM
3129# define STATUS_ALL_SUCCESS \
3130 (PL_statusvalue = 0, PL_statusvalue_vms = SS$_NORMAL)
fb38d079
JM
3131
3132 /* This macro forces a failure status */
7a7fd8e0
JM
3133# define STATUS_ALL_FAILURE (PL_statusvalue = 1, \
3134 vaxc$errno = PL_statusvalue_vms = MY_POSIX_EXIT ? \
3135 (C_FAC_POSIX | (1 << 3) | STS$K_ERROR | STS$M_INHIB_MSG) : SS$_ABORT)
fb38d079 3136
738ab09f
AB
3137#elif defined(__amigaos4__)
3138 /* A somewhat experimental attempt to simulate posix return code values */
3139# define STATUS_NATIVE PL_statusvalue_posix
3140# define STATUS_NATIVE_CHILD_SET(n) \
3141 STMT_START { \
3142 PL_statusvalue_posix = (n); \
3143 if (PL_statusvalue_posix < 0) { \
3144 PL_statusvalue = -1; \
3145 } \
3146 else { \
3147 PL_statusvalue = n << 8; \
3148 } \
3149 } STMT_END
3150# define STATUS_UNIX_SET(n) \
3151 STMT_START { \
3152 PL_statusvalue = (n); \
3153 if (PL_statusvalue != -1) \
3154 PL_statusvalue &= 0xFFFF; \
3155 } STMT_END
3156# define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
3157# define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
3158# define STATUS_CURRENT STATUS_UNIX
3159# define STATUS_EXIT STATUS_UNIX
3160# define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3161# define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
3162
68dc0745 3163#else
e5218da5 3164# define STATUS_NATIVE PL_statusvalue_posix
e5218da5 3165# if defined(WCOREDUMP)
37038d91 3166# define STATUS_NATIVE_CHILD_SET(n) \
e5218da5
GA
3167 STMT_START { \
3168 PL_statusvalue_posix = (n); \
3169 if (PL_statusvalue_posix == -1) \
3170 PL_statusvalue = -1; \
3171 else { \
3172 PL_statusvalue = \
3173 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3174 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0) | \
3175 (WIFSIGNALED(PL_statusvalue_posix) && WCOREDUMP(PL_statusvalue_posix) ? 0x80 : 0); \
3176 } \
3177 } STMT_END
3178# elif defined(WIFEXITED)
37038d91 3179# define STATUS_NATIVE_CHILD_SET(n) \
e5218da5
GA
3180 STMT_START { \
3181 PL_statusvalue_posix = (n); \
3182 if (PL_statusvalue_posix == -1) \
3183 PL_statusvalue = -1; \
3184 else { \
3185 PL_statusvalue = \
3186 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3187 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0); \
3188 } \
3189 } STMT_END
3190# else
37038d91 3191# define STATUS_NATIVE_CHILD_SET(n) \
e5218da5
GA
3192 STMT_START { \
3193 PL_statusvalue_posix = (n); \
3194 if (PL_statusvalue_posix == -1) \
3195 PL_statusvalue = -1; \
3196 else { \
3197 PL_statusvalue = \
3198 PL_statusvalue_posix & 0xFFFF; \
3199 } \
3200 } STMT_END
3201# endif
3202# define STATUS_UNIX_SET(n) \
68dc0745 3203 STMT_START { \
3280af22
NIS
3204 PL_statusvalue = (n); \
3205 if (PL_statusvalue != -1) \
3206 PL_statusvalue &= 0xFFFF; \
68dc0745 3207 } STMT_END
7a7fd8e0 3208# define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
6ac6a52b 3209# define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
e5218da5 3210# define STATUS_CURRENT STATUS_UNIX
37038d91 3211# define STATUS_EXIT STATUS_UNIX
e5218da5
GA
3212# define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3213# define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
68dc0745
PP
3214#endif
3215
cc3604b1
GS
3216/* flags in PL_exit_flags for nature of exit() */
3217#define PERL_EXIT_EXPECTED 0x01
31d77e54 3218#define PERL_EXIT_DESTRUCT_END 0x02 /* Run END in perl_destruct */
6136213b
JGM
3219#define PERL_EXIT_WARN 0x04 /* Warn if Perl_my_exit() or Perl_my_failure_exit() called */
3220#define PERL_EXIT_ABORT 0x08 /* Call abort() if Perl_my_exit() or Perl_my_failure_exit() called */
cc3604b1 3221
b79b76e0 3222#ifndef PERL_CORE
a7cb1f99 3223/* format to use for version numbers in file/directory names */
273cf8d1 3224/* XXX move to Configure? */
b79b76e0
NC
3225/* This was only ever used for the current version, and that can be done at
3226 compile time, as PERL_FS_VERSION, so should we just delete it? */
3227# ifndef PERL_FS_VER_FMT
3228# define PERL_FS_VER_FMT "%d.%d.%d"
3229# endif
3230#endif
3231
3232#ifndef PERL_FS_VERSION
3233# define PERL_FS_VERSION PERL_VERSION_STRING
0b94c7bb
GS
3234#endif
3235
45bc9206 3236/* This defines a way to flush all output buffers. This may be a
76549fef
JH
3237 * performance issue, so we allow people to disable it. Also, if
3238 * we are using stdio, there are broken implementations of fflush(NULL)
3239 * out there, Solaris being the most prominent.
45bc9206
GS
3240 */
3241#ifndef PERL_FLUSHALL_FOR_CHILD
97cb92d6 3242# if defined(USE_PERLIO) || defined(FFLUSH_NULL)
66fe083f 3243# define PERL_FLUSHALL_FOR_CHILD PerlIO_flush((PerlIO*)NULL)
da5fdda8
AC
3244# elif defined(FFLUSH_ALL)
3245# define PERL_FLUSHALL_FOR_CHILD my_fflush_all()
767df6a1 3246# else
da5fdda8 3247# define PERL_FLUSHALL_FOR_CHILD NOOP
66fe083f 3248# endif
45bc9206
GS
3249#endif
3250
7766f137
GS
3251#ifndef PERL_WAIT_FOR_CHILDREN
3252# define PERL_WAIT_FOR_CHILDREN NOOP
3253#endif
3254
ba869deb 3255/* the traditional thread-unsafe notion of "current interpreter". */
c5be433b
GS
3256#ifndef PERL_SET_INTERP
3257# define PERL_SET_INTERP(i) (PL_curinterp = (PerlInterpreter*)(i))
3258#endif
3259
3260#ifndef PERL_GET_INTERP
3261# define PERL_GET_INTERP (PL_curinterp)
3262#endif
3263
54aff467 3264#if defined(PERL_IMPLICIT_CONTEXT) && !defined(PERL_GET_THX)
54aff467 3265# ifdef MULTIPLICITY
ba869deb 3266# define PERL_GET_THX ((PerlInterpreter *)PERL_GET_CONTEXT)
54aff467 3267# endif
ba869deb
GS
3268# define PERL_SET_THX(t) PERL_SET_CONTEXT(t)
3269#endif
3270
00f254e2 3271/*
8896765a 3272 This replaces the previous %_ "hack" by the "%p" hacks.
0dbb1585 3273 All that is required is that the perl source does not
00f254e2
KW
3274 use "%-p" or "%-<number>p" or "%<number>p" formats.
3275 These formats will still work in perl code.
486ec47a 3276 See comments in sv.c for further details.
8896765a 3277
8896765a 3278 Robin Barker 2005-07-14
f46d31f2 3279
00f254e2 3280 No longer use %1p for VDf = %vd. RMB 2007-10-19
0dbb1585 3281*/
8896765a
RB
3282
3283#ifndef SVf_
63ce7bf0 3284# define SVf_(n) "-" STRINGIFY(n) "p"
894356b3
GS
3285#endif
3286
8896765a 3287#ifndef SVf
104abab4 3288# define SVf "-p"
d2560b70
RB
3289#endif
3290
014ead4b 3291#ifndef SVf32
8896765a 3292# define SVf32 SVf_(32)
014ead4b
RB
3293#endif
3294
3295#ifndef SVf256
8896765a
RB
3296# define SVf256 SVf_(256)
3297#endif
3298
be2597df
MHM
3299#define SVfARG(p) ((void*)(p))
3300
20023040
FC
3301#ifndef HEKf
3302# define HEKf "2p"
3303#endif
3304
b8fa5213
FC
3305/* Not ideal, but we cannot easily include a number in an already-numeric
3306 * format sequence. */
3307#ifndef HEKf256
3308# define HEKf256 "3p"
3309#endif
3310
20023040
FC
3311#define HEKfARG(p) ((void*)(p))
3312
b17a0679
FC
3313/* Takes three arguments: is_utf8, length, str */
3314#ifndef UTF8f
61608bb7 3315# define UTF8f "d%" UVuf "%4p"
b17a0679
FC
3316#endif
3317#define UTF8fARG(u,l,p) (int)cBOOL(u), (UV)(l), (void*)(p)
3318
0f94cb1f
FC
3319#define PNf UTF8f
3320#define PNfARG(pn) (int)1, (UV)PadnameLEN(pn), (void *)PadnamePV(pn)
0d1e9135 3321
f46d31f2 3322#ifdef PERL_CORE
486ec47a 3323/* not used; but needed for backward compatibility with XS code? - RMB */
7776bb98 3324# undef UVf
da5fdda8
AC
3325#elif !defined(UVf)
3326# define UVf UVuf
d2560b70
RB
3327#endif
3328
fcdf39cf
RGS
3329#ifdef HASATTRIBUTE_DEPRECATED
3330# define __attribute__deprecated__ __attribute__((deprecated))
3331#endif
0dbb1585
AL
3332#ifdef HASATTRIBUTE_FORMAT
3333# define __attribute__format__(x,y,z) __attribute__((format(x,y,z)))
3334#endif
3335#ifdef HASATTRIBUTE_MALLOC
77785eea 3336# define __attribute__malloc__ __attribute__((__malloc__))
f22be1b8 3337#endif
0dbb1585 3338#ifdef HASATTRIBUTE_NONNULL
abb2c242 3339# define __attribute__nonnull__(a) __attribute__((nonnull(a)))
f22be1b8 3340#endif
0dbb1585 3341#ifdef HASATTRIBUTE_NORETURN
abb2c242 3342# define __attribute__noreturn__ __attribute__((noreturn))
f22be1b8 3343#endif
0dbb1585 3344#ifdef HASATTRIBUTE_PURE
abb2c242 3345# define __attribute__pure__ __attribute__((pure))
f22be1b8 3346#endif
0dbb1585
AL
3347#ifdef HASATTRIBUTE_UNUSED
3348# define __attribute__unused__ __attribute__((unused))
3349#endif
3350#ifdef HASATTRIBUTE_WARN_UNUSED_RESULT
abb2c242 3351# define __attribute__warn_unused_result__ __attribute__((warn_unused_result))
f22be1b8
JH
3352#endif
3353
0dbb1585 3354/* If we haven't defined the attributes yet, define them to blank. */
fcdf39cf
RGS
3355#ifndef __attribute__deprecated__
3356# define __attribute__deprecated__
3357#endif
0dbb1585
AL
3358#ifndef __attribute__format__
3359# define __attribute__format__(x,y,z)
3360#endif
f22be1b8 3361#ifndef __attribute__malloc__
abb2c242 3362# define __attribute__malloc__
f22be1b8
JH
3363#endif
3364#ifndef __attribute__nonnull__
abb2c242 3365# define __attribute__nonnull__(a)
f22be1b8
JH
3366#endif
3367#ifndef __attribute__noreturn__
abb2c242 3368# define __attribute__noreturn__
f22be1b8
JH
3369#endif
3370#ifndef __attribute__pure__
abb2c242 3371# define __attribute__pure__
f22be1b8 3372#endif
0dbb1585
AL
3373#ifndef __attribute__unused__
3374# define __attribute__unused__
3375#endif
f22be1b8 3376#ifndef __attribute__warn_unused_result__
abb2c242
JH
3377# define __attribute__warn_unused_result__
3378#endif
3379
6ff2ec7d
AC
3380#if !defined(DEBUGGING) && !defined(NDEBUG)
3381# define NDEBUG 1
cd13e623 3382#endif
6ff2ec7d 3383#include <assert.h>
cd13e623 3384
0dbb1585
AL
3385/* For functions that are marked as __attribute__noreturn__, it's not
3386 appropriate to call return. In either case, include the lint directive.
3387 */
3388#ifdef HASATTRIBUTE_NORETURN
bc3d2941 3389# define NORETURN_FUNCTION_END NOT_REACHED;
0dbb1585 3390#else
bc3d2941 3391# define NORETURN_FUNCTION_END NOT_REACHED; return 0
abb2c242
JH
3392#endif
3393
cdfeb707
RB
3394/* Some OS warn on NULL format to printf */
3395#ifdef PRINTF_FORMAT_NULL_OK
3396# define __attribute__format__null_ok__(x,y,z) __attribute__format__(x,y,z)
3397#else
00f254e2 3398# define __attribute__format__null_ok__(x,y,z)
cdfeb707
RB
3399#endif
3400
635aebb7 3401#ifdef HAS_BUILTIN_EXPECT
b37c2d43
AL
3402# define EXPECT(expr,val) __builtin_expect(expr,val)
3403#else
3404# define EXPECT(expr,val) (expr)
3405#endif
6d5abc62
NC
3406#define LIKELY(cond) EXPECT(cBOOL(cond),TRUE)
3407#define UNLIKELY(cond) EXPECT(cBOOL(cond),FALSE)
635aebb7
AL
3408#ifdef HAS_BUILTIN_CHOOSE_EXPR
3409/* placeholder */
3410#endif
b37c2d43 3411
a36ca6de 3412/* STATIC_ASSERT_DECL/STATIC_ASSERT_STMT are like assert(), but for compile
5074d4c5
LM
3413 time invariants. That is, their argument must be a constant expression that
3414 can be verified by the compiler. This expression can contain anything that's
3415 known to the compiler, e.g. #define constants, enums, or sizeof (...). If
3416 the expression evaluates to 0, compilation fails.
3417 Because they generate no runtime code (i.e. their use is "free"), they're
3418 always active, even under non-DEBUGGING builds.
a36ca6de 3419 STATIC_ASSERT_DECL expands to a declaration and is suitable for use at
5074d4c5
LM
3420 file scope (outside of any function).
3421 STATIC_ASSERT_STMT expands to a statement and is suitable for use inside a
3422 function.
3423*/
7ea096df 3424#if (defined(static_assert) || (defined(__cplusplus) && __cplusplus >= 201103L)) && (!defined(__IBMC__) || __IBMC__ >= 1210)
6d59e610 3425/* static_assert is a macro defined in <assert.h> in C11 or a compiler
a36ca6de
LM
3426 builtin in C++11. But IBM XL C V11 does not support _Static_assert, no
3427 matter what <assert.h> says.
6d59e610 3428*/
a36ca6de 3429# define STATIC_ASSERT_DECL(COND) static_assert(COND, #COND)
6d59e610
LM
3430#else
3431/* We use a bit-field instead of an array because gcc accepts
3432 'typedef char x[n]' where n is not a compile-time constant.
3433 We want to enforce constantness.
3434*/
3435# define STATIC_ASSERT_2(COND, SUFFIX) \
3436 typedef struct { \
3437 unsigned int _static_assertion_failed_##SUFFIX : (COND) ? 1 : -1; \
3438 } _static_assertion_failed_##SUFFIX PERL_UNUSED_DECL
3439# define STATIC_ASSERT_1(COND, SUFFIX) STATIC_ASSERT_2(COND, SUFFIX)
a36ca6de 3440# define STATIC_ASSERT_DECL(COND) STATIC_ASSERT_1(COND, __LINE__)
6d59e610
LM
3441#endif
3442/* We need this wrapper even in C11 because 'case X: static_assert(...);' is an
3443 error (static_assert is a declaration, and only statements can have labels).
3444*/
21aae866 3445#define STATIC_ASSERT_STMT(COND) STMT_START { STATIC_ASSERT_DECL(COND); } STMT_END
ae103e09
DD
3446
3447#ifndef __has_builtin
3448# define __has_builtin(x) 0 /* not a clang style compiler */
3449#endif
3450
3451/* ASSUME is like assert(), but it has a benefit in a release build. It is a
3452 hint to a compiler about a statement of fact in a function call free
3453 expression, which allows the compiler to generate better machine code.
3454 In a debug build, ASSUME(x) is a synonym for assert(x). ASSUME(0) means
3455 the control path is unreachable. In a for loop, ASSUME can be used to hint
b8fda935 3456 that a loop will run at least X times. ASSUME is based off MSVC's __assume
ae103e09
DD
3457 intrinsic function, see its documents for more details.
3458*/
3459
3460#ifndef DEBUGGING
3461# if __has_builtin(__builtin_unreachable) \
d1020b40 3462 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5 || __GNUC__ > 4) /* 4.5 -> */
ae103e09
DD
3463# define ASSUME(x) ((x) ? (void) 0 : __builtin_unreachable())
3464# elif defined(_MSC_VER)
3465# define ASSUME(x) __assume(x)
3466# elif defined(__ARMCC_VERSION) /* untested */
3467# define ASSUME(x) __promise(x)
3468# else
3469/* a random compiler might define assert to its own special optimization token
3470 so pass it through to C lib as a last resort */
3471# define ASSUME(x) assert(x)
3472# endif
3473#else
3474# define ASSUME(x) assert(x)
3475#endif
3476
dbc47c6f
KW
3477#if defined(__sun) /* ASSUME() generates warnings on Solaris */
3478# define NOT_REACHED
2145f4b6
LM
3479#elif defined(DEBUGGING) && (__has_builtin(__builtin_unreachable) \
3480 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5 || __GNUC__ > 4)) /* 4.5 -> */
3481# define NOT_REACHED STMT_START { ASSUME(0); __builtin_unreachable(); } STMT_END
dbc47c6f
KW
3482#else
3483# define NOT_REACHED ASSUME(0)
3484#endif
ae103e09 3485
3fc1aec6
PP
3486/* Some unistd.h's give a prototype for pause() even though
3487 HAS_PAUSE ends up undefined. This causes the #define
d2560b70 3488 below to be rejected by the compiler. Sigh.
3fc1aec6
PP
3489*/
3490#ifdef HAS_PAUSE
3491#define Pause pause
3492#else
3493#define Pause() sleep((32767<<16)+32767)
748a9306
LW
3494#endif
3495
3496#ifndef IOCPARM_LEN
3497# ifdef IOCPARM_MASK
61f1c44b 3498 /* on BSDish systems we're safe */
748a9306 3499# define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
da5fdda8 3500# elif defined(_IOC_SIZE) && defined(__GLIBC__)
301eb2f0 3501 /* on Linux systems we're safe; except when we're not [perl #38223] */
da5fdda8
AC
3502# define IOCPARM_LEN(x) (_IOC_SIZE(x) < 256 ? 256 : _IOC_SIZE(x))
3503# else
748a9306 3504 /* otherwise guess at what's safe */
da5fdda8 3505# define IOCPARM_LEN(x) 256
748a9306 3506# endif
a0d0e21e
LW
3507#endif
3508
1761cee5 3509#if defined(__CYGWIN__)
521e0776
GS
3510/* USEMYBINMODE
3511 * This symbol, if defined, indicates that the program should
16fe6d59 3512 * use the routine my_binmode(FILE *fp, char iotype, int mode) to insure
521e0776
GS
3513 * that a file is in "binary" mode -- that is, that no translation
3514 * of bytes occurs on read or write operations.
3515 */
36894f0b 3516# define USEMYBINMODE /**/
77a40698 3517# include <io.h> /* for setmode() prototype */
16fe6d59 3518# define my_binmode(fp, iotype, mode) \
8298454c 3519 cBOOL(PerlLIO_setmode(fileno(fp), mode) != -1)
5aabfad6
PP
3520#endif
3521
88d10794
JH
3522#ifdef __CYGWIN__
3523void init_os_extras(void);
3524#endif
3525
cea2e8a9
GS
3526#ifdef UNION_ANY_DEFINITION
3527UNION_ANY_DEFINITION;
3528#else
3529union any {
3530 void* any_ptr;
c9728782
DM
3531 SV* any_sv;
3532 SV** any_svp;
3533 GV* any_gv;
3534 AV* any_av;
3535 HV* any_hv;
6ffb8402 3536 OP* any_op;
c9728782
DM
3537 char* any_pv;
3538 char** any_pvp;
cea2e8a9 3539 I32 any_i32;
ae103e09 3540 U32 any_u32;
cea2e8a9 3541 IV any_iv;
c6bf6a65 3542 UV any_uv;
cea2e8a9 3543 long any_long;
9febdf04 3544 bool any_bool;
c76ac1ee 3545 void (*any_dptr) (void*);
acfe0abc 3546 void (*any_dxptr) (pTHX_ void*);
cea2e8a9
GS
3547};
3548#endif
3549
acfe0abc 3550typedef I32 (*filter_t) (pTHX_ int, SV *, int);
cea2e8a9
GS
3551
3552#define FILTER_READ(idx, sv, len) filter_read(idx, sv, len)
5486870f
DM
3553#define FILTER_DATA(idx) \
3554 (PL_parser ? AvARRAY(PL_parser->rsfp_filters)[idx] : NULL)
3555#define FILTER_ISREADER(idx) \
3556 (PL_parser && PL_parser->rsfp_filters \
3557 && idx >= AvFILLp(PL_parser->rsfp_filters))
3558#define PERL_FILTER_EXISTS(i) \
3559 (PL_parser && PL_parser->rsfp_filters \
b9f2b683 3560 && (i) <= av_tindex(PL_parser->rsfp_filters))
cea2e8a9 3561
c5078cac
JH
3562#if defined(_AIX) && !defined(_AIX43)
3563#if defined(USE_REENTRANT) || defined(_REENTRANT) || defined(_THREAD_SAFE)
3564/* We cannot include <crypt.h> to get the struct crypt_data
3565 * because of setkey prototype problems when threading */
3566typedef struct crypt_data { /* straight from /usr/include/crypt.h */
3567 /* From OSF, Not needed in AIX
3568 char C[28], D[28];
3569 */
3570 char E[48];
3571 char KS[16][48];
3572 char block[66];
3573 char iobuf[16];
3574} CRYPTD;
3575#endif /* threading */
3576#endif /* AIX */
3577
fc6bde6f
DD
3578#ifndef PERL_CALLCONV
3579# ifdef __cplusplus
3580# define PERL_CALLCONV extern "C"
3581# else
3582# define PERL_CALLCONV
3583# endif
3584#endif
3585#ifndef PERL_CALLCONV_NO_RET
3586# define PERL_CALLCONV_NO_RET PERL_CALLCONV
3587#endif
3588
3589/* PERL_STATIC_NO_RET is supposed to be equivalent to STATIC on builds that
3590 dont have a noreturn as a declaration specifier
3591*/
3592#ifndef PERL_STATIC_NO_RET
3593# define PERL_STATIC_NO_RET STATIC
3594#endif
3595/* PERL_STATIC_NO_RET is supposed to be equivalent to PERL_STATIC_INLINE on
3596 builds that dont have a noreturn as a declaration specifier
3597*/
3598#ifndef PERL_STATIC_INLINE_NO_RET
3599# define PERL_STATIC_INLINE_NO_RET PERL_STATIC_INLINE
3600#endif
3601
e37778c2 3602#if !defined(OS2)
2c2d71f5
JH
3603# include "iperlsys.h"
3604#endif
504f80c1 3605
9c12f1e5 3606#ifdef __LIBCATAMOUNT__
00f254e2 3607#undef HAS_PASSWD /* unixish.h but not unixish enough. */
9c12f1e5
RGS
3608#undef HAS_GROUP
3609#define FAKE_BIT_BUCKET
3610#endif
3611
d10dc2ae 3612/* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0.
1a237f4f
YO
3613 * Note that the USE_HASH_SEED and similar defines are *NOT* defined by
3614 * Configure, despite their names being similar to other defines like
3615 * USE_ITHREADS. Configure in fact knows nothing about the randomised
3616 * hashes. Therefore to enable/disable the hash randomisation defines
3617 * use the Configure -Accflags=... instead. */
3618#if !defined(NO_HASH_SEED) && !defined(USE_HASH_SEED)
4546b9e6 3619# define USE_HASH_SEED
504f80c1
JH
3620#endif
3621
598921a7
NC
3622#include "perly.h"
3623
598921a7 3624
654eccd5
JD
3625/* macros to define bit-fields in structs. */
3626#ifndef PERL_BITFIELD8
3627# define PERL_BITFIELD8 unsigned
3628#endif
3629#ifndef PERL_BITFIELD16
3630# define PERL_BITFIELD16 unsigned
3631#endif
3632#ifndef PERL_BITFIELD32
3633# define PERL_BITFIELD32 unsigned
3634#endif
3635
79072805 3636#include "sv.h"
288b8c02 3637#include "regexp.h"
378cc40b 3638#include "util.h"
8d063cd8 3639#include "form.h"
79072805 3640#include "gv.h"
dd2155a4 3641#include "pad.h"
79072805 3642#include "cv.h"
abdd5c84 3643#include "opnames.h"
79072805 3644#include "op.h"
b3ca2e83 3645#include "hv.h"
79072805
LW
3646#include "cop.h"
3647#include "av.h"
79072805
LW
3648#include "mg.h"
3649#include "scope.h"
4438c4b7 3650#include "warnings.h"
a0ed51b3 3651#include "utf8.h"
8d063cd8 3652
0d7d409d
DM
3653/* these would be in doio.h if there was such a file */
3654#define my_stat() my_stat_flags(SV_GMAGIC)
3655#define my_lstat() my_lstat_flags(SV_GMAGIC)
3656
20f4945e 3657/* defined in sv.c, but also used in [ach]v.c */
20f4945e
MHM
3658#undef _XPV_HEAD
3659#undef _XPVMG_HEAD
3660#undef _XPVCV_COMMON
7fae4e64 3661
199e78b7
DM
3662#include "parser.h"
3663
455ece5e 3664typedef struct magic_state MGS; /* struct magic_state defined in mg.c */
76e3520e 3665
2260ab51
KW
3666#if defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_REGEXEC_C)
3667
3668/* These have to be predeclared, as they are used in proto.h which is #included
3669 * before their definitions in regcomp.h. */
3670
3671struct scan_data_t;
7dcac5f6
KW
3672typedef struct regnode_charclass regnode_charclass;
3673
2260ab51 3674struct regnode_charclass_class;
d1d040e5
KW
3675
3676/* A hopefully less confusing name. The sub-classes are all Posix classes only
3677 * used under /l matching */
3678typedef struct regnode_charclass_class regnode_charclass_posixl;
3679
b8f7bb16 3680typedef struct regnode_ssc regnode_ssc;
09b2b2e6
KW
3681typedef struct RExC_state_t RExC_state_t;
3682struct _reg_trie_data;
76e3520e 3683
2260ab51
KW
3684#endif
3685
5f7fde29
GS
3686struct ptr_tbl_ent {
3687 struct ptr_tbl_ent* next;
53c1dcc0 3688 const void* oldval;
5f7fde29 3689 void* newval;
d18c6117
GS
3690};
3691
5f7fde29
GS
3692struct ptr_tbl {
3693 struct ptr_tbl_ent** tbl_ary;
3694 UV tbl_max;
3695 UV tbl_items;
db93c0c4
NC
3696 struct ptr_tbl_arena *tbl_arena;
3697 struct ptr_tbl_ent *tbl_arena_next;
3698 struct ptr_tbl_ent *tbl_arena_end;
d18c6117
GS
3699};
3700
fe14fcc3
LW
3701#if defined(htonl) && !defined(HAS_HTONL)
3702#define HAS_HTONL
ae986130 3703#endif
fe14fcc3
LW
3704#if defined(htons) && !defined(HAS_HTONS)
3705#define HAS_HTONS
ae986130 3706#endif
fe14fcc3
LW
3707